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<div class="title">chap-new.h</div> </div>
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<a href="chap-new_8h.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"> * chap-new.c - New CHAP implementation.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (c) 2003 Paul Mackerras. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * 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</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.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 2. The name(s) of the authors of this software must not be used to</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * endorse or promote products derived from this software without</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 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"> * 3. Redistributions of any form whatsoever must retain the following</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * acknowledgment:</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * "This product includes software developed by Paul Mackerras</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * <paulus@samba.org>".</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="ppp__opts_8h.html">netif/ppp/ppp_opts.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#if PPP_SUPPORT && CHAP_SUPPORT </span><span class="comment">/* don't build if not configured for use in lwipopts.h */</span><span class="preprocessor"></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">#ifndef CHAP_H</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#define CHAP_H</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include "<a class="code" href="ppp_8h.html">ppp.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="comment">/*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * CHAP packets begin with a standard header with code, id, len (2 bytes).</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="preprocessor">#define CHAP_HDRLEN 4</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * Values for the code field.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#define CHAP_CHALLENGE 1</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#define CHAP_RESPONSE 2</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#define CHAP_SUCCESS 3</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#define CHAP_FAILURE 4</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"> * CHAP digest codes.</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#define CHAP_MD5 5</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#if MSCHAP_SUPPORT</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#define CHAP_MICROSOFT 0x80</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#define CHAP_MICROSOFT_V2 0x81</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#endif </span><span class="comment">/* MSCHAP_SUPPORT */</span><span class="preprocessor"></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="comment">/*</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * Semi-arbitrary limits on challenge and response fields.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#define MAX_CHALLENGE_LEN 64</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor">#define MAX_RESPONSE_LEN 64</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * These limits apply to challenge and response packets we send.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * The +4 is the +1 that we actually need rounded up.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#define CHAL_MAX_PKTLEN (PPP_HDRLEN + CHAP_HDRLEN + 4 + MAX_CHALLENGE_LEN + MAXNAMELEN)</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#define RESP_MAX_PKTLEN (PPP_HDRLEN + CHAP_HDRLEN + 4 + MAX_RESPONSE_LEN + MAXNAMELEN)</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="comment">/* bitmask of supported algorithms */</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#if MSCHAP_SUPPORT</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#define MDTYPE_MICROSOFT_V2 0x1</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#define MDTYPE_MICROSOFT 0x2</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#endif </span><span class="comment">/* MSCHAP_SUPPORT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#define MDTYPE_MD5 0x4</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#define MDTYPE_NONE 0</span></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> <span class="preprocessor">#if MSCHAP_SUPPORT</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">/* Return the digest alg. ID for the most preferred digest type. */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#define CHAP_DIGEST(mdtype) \</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"> ((mdtype) & MDTYPE_MD5)? CHAP_MD5: \</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor"> ((mdtype) & MDTYPE_MICROSOFT_V2)? CHAP_MICROSOFT_V2: \</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor"> ((mdtype) & MDTYPE_MICROSOFT)? CHAP_MICROSOFT: \</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#else </span><span class="comment">/* !MSCHAP_SUPPORT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#define CHAP_DIGEST(mdtype) \</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor"> ((mdtype) & MDTYPE_MD5)? CHAP_MD5: \</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#endif </span><span class="comment">/* MSCHAP_SUPPORT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">/* Return the bit flag (lsb set) for our most preferred digest type. */</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor">#define CHAP_MDTYPE(mdtype) ((mdtype) ^ ((mdtype) - 1)) & (mdtype)</span></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">/* Return the bit flag for a given digest algorithm ID. */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#if MSCHAP_SUPPORT</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#define CHAP_MDTYPE_D(digest) \</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"> ((digest) == CHAP_MICROSOFT_V2)? MDTYPE_MICROSOFT_V2: \</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor"> ((digest) == CHAP_MICROSOFT)? MDTYPE_MICROSOFT: \</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor"> ((digest) == CHAP_MD5)? MDTYPE_MD5: \</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor">#else </span><span class="comment">/* !MSCHAP_SUPPORT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#define CHAP_MDTYPE_D(digest) \</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"> ((digest) == CHAP_MD5)? MDTYPE_MD5: \</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor">#endif </span><span class="comment">/* MSCHAP_SUPPORT */</span><span class="preprocessor"></span></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="comment">/* Can we do the requested digest? */</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#if MSCHAP_SUPPORT</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#define CHAP_CANDIGEST(mdtype, digest) \</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor"> ((digest) == CHAP_MICROSOFT_V2)? (mdtype) & MDTYPE_MICROSOFT_V2: \</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor"> ((digest) == CHAP_MICROSOFT)? (mdtype) & MDTYPE_MICROSOFT: \</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor"> ((digest) == CHAP_MD5)? (mdtype) & MDTYPE_MD5: \</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#else </span><span class="comment">/* !MSCHAP_SUPPORT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#define CHAP_CANDIGEST(mdtype, digest) \</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor"> ((digest) == CHAP_MD5)? (mdtype) & MDTYPE_MD5: \</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor"> 0</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#endif </span><span class="comment">/* MSCHAP_SUPPORT */</span><span class="preprocessor"></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"> * The code for each digest type has to supply one of these.</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">struct </span>chap_digest_type {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">int</span> code;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#if PPP_SERVER</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"> * Note: challenge and response arguments below are formatted as</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * a length byte followed by the actual challenge/response data.</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>  void (*generate_challenge)(ppp_pcb *pcb, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *challenge);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  int (*verify_response)(ppp_pcb *pcb, <span class="keywordtype">int</span> <a class="code" href="kernel_2elf_8c.html#affd99ec09f321a630ec19d0333e291cd">id</a>, <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>,</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *secret, <span class="keywordtype">int</span> secret_len,</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *challenge, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *response,</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">char</span> *message, <span class="keywordtype">int</span> message_space);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#endif </span><span class="comment">/* PPP_SERVER */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  void (*make_response)(ppp_pcb *pcb, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *response, <span class="keywordtype">int</span> <a class="code" href="kernel_2elf_8c.html#affd99ec09f321a630ec19d0333e291cd">id</a>, <span class="keyword">const</span> <span class="keywordtype">char</span> *our_name,</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *challenge, <span class="keyword">const</span> <span class="keywordtype">char</span> *secret, <span class="keywordtype">int</span> secret_len,</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  int (*check_success)(ppp_pcb *pcb, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pkt, <span class="keywordtype">int</span> len, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *priv);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  void (*handle_failure)(ppp_pcb *pcb, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *pkt, <span class="keywordtype">int</span> len);</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="comment">/*</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> * Each interface is described by chap structure.</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#if CHAP_SUPPORT</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>chap_client_state {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> flags;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">const</span> <span class="keyword">struct </span>chap_digest_type *digest;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> priv[64]; <span class="comment">/* private area for digest's use */</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> } chap_client_state;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor">#if PPP_SERVER</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>chap_server_state {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> flags;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> <a class="code" href="kernel_2elf_8c.html#affd99ec09f321a630ec19d0333e291cd">id</a>;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> <span class="keyword">struct </span>chap_digest_type *digest;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordtype">int</span> challenge_xmits;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordtype">int</span> challenge_pktlen;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> challenge[CHAL_MAX_PKTLEN];</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> } chap_server_state;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#endif </span><span class="comment">/* PPP_SERVER */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor">#endif </span><span class="comment">/* CHAP_SUPPORT */</span><span class="preprocessor"></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> <span class="preprocessor">#if 0 </span><span class="comment">/* UNUSED */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment">/* Hook for a plugin to validate CHAP challenge */</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">extern</span> int (*chap_verify_hook)(<span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keywordtype">char</span> *ourname, <span class="keywordtype">int</span> <a class="code" href="kernel_2elf_8c.html#affd99ec09f321a630ec19d0333e291cd">id</a>,</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">const</span> <span class="keyword">struct </span>chap_digest_type *digest,</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *challenge, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *response,</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordtype">char</span> *message, <span class="keywordtype">int</span> message_space);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor">#endif </span><span class="comment">/* UNUSED */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor">#if PPP_SERVER</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment">/* Called by authentication code to start authenticating the peer. */</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> chap_auth_peer(ppp_pcb *pcb, <span class="keyword">const</span> <span class="keywordtype">char</span> *our_name, <span class="keywordtype">int</span> digest_code);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="preprocessor">#endif </span><span class="comment">/* PPP_SERVER */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment">/* Called by auth. code to start authenticating us to the peer. */</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> chap_auth_with_peer(ppp_pcb *pcb, <span class="keyword">const</span> <span class="keywordtype">char</span> *our_name, <span class="keywordtype">int</span> digest_code);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment">/* Represents the CHAP protocol to the main pppd code */</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keyword">struct </span>protent chap_protent;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor">#endif </span><span class="comment">/* CHAP_H */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="preprocessor">#endif </span><span class="comment">/* PPP_SUPPORT && CHAP_SUPPORT */</span><span class="preprocessor"></span></div>
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