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<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"> Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - <http://www.fabgl.com></span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> Copyright (c) 2019-2021 Fabrizio Di Vittorio.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> 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"> This file is part of FabGL Library.</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"></span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> FabGL is free software: you can redistribute it and/or modify</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> it under the terms of the GNU General Public License as published by</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> the Free Software Foundation, either version 3 of the License, or</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> (at your option) any later version.</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"> FabGL is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> GNU General Public License for more details.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> along with FabGL. If not, see <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#ifdef ARDUINO</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</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> <span class="preprocessor">#include "<a class="code" href="_i_c_m_p_8h.html">ICMP.h</a>"</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "Arduino.h"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "WiFiGeneric.h"</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> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span><a class="code" href="namespacefabgl.html">fabgl</a> {</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> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> ICMP::ICMP()</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  : m_queue(xQueueCreate(1, sizeof(uint8_t))), m_waitingID(rand() & 0xFFFF), m_waitingSeq(-1)</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</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> </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> ICMP::~ICMP()</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  vQueueDelete(m_queue);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// -1 = timeout</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// -2 = cannot resolve name</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keywordtype">int</span> ICMP::ping(<span class="keywordtype">char</span> <span class="keyword">const</span> * host)</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>  IPAddress hostIP((uint32_t)0);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (!WiFiGenericClass::hostByName(host, hostIP))</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> -2;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> ping(hostIP);</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"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// -1 = timeout</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> ICMP::ping(IPAddress <span class="keyword">const</span> &dest)</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="keyword">static</span> int32_t <span class="keyword">const</span> TIMEOUT = 1000;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">static</span> int32_t <span class="keyword">const</span> TIMEOUT_RESULT = -1;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  m_destIP = dest;</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>  <span class="keywordtype">int</span> result = TIMEOUT_RESULT;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// generate seq</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  ++m_waitingSeq;</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">// prepare packet to send</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  pbuf * hdrbuf = pbuf_alloc(PBUF_IP, <span class="keyword">sizeof</span>(icmp_echo_hdr), PBUF_RAM);</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  icmp_echo_hdr * hdr = (icmp_echo_hdr *) hdrbuf->payload;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  hdr->type = ICMP_ECHO;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  hdr->code = 0;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  hdr->chksum = 0;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  hdr->id = htons(m_waitingID);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  hdr->seqno = htons(m_waitingSeq);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  hdr->chksum = inet_chksum((uint16_t *) hdr, <span class="keyword">sizeof</span>(icmp_echo_hdr));</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// send Echo request</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  raw_pcb * pcb = raw_new(IP_PROTO_ICMP);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  raw_recv(pcb, ICMP::raw_recv_fn, <span class="keyword">this</span>);</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  raw_bind(pcb, IP_ADDR_ANY);</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  ip_addr_t addr;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  addr.type = IPADDR_TYPE_V4;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  addr.u_addr.ip4.addr = dest;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  raw_sendto(pcb, hdrbuf, &addr);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  pbuf_free(hdrbuf);</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>  result = -1;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  int32_t t1 = micros();</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  uint8_t c;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (xQueueReceive(m_queue, &c, pdMS_TO_TICKS(TIMEOUT)))</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  result = micros() - t1;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  raw_remove(pcb);</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> result;</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> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> uint8_t ICMP::raw_recv_fn(<span class="keywordtype">void</span> * arg, raw_pcb * pcb, pbuf * p, <span class="keyword">const</span> ip_addr_t * addr)</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> {</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  ICMP * this_ = (ICMP *)arg;</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>  ip_hdr * iphdr = (ip_hdr *)p->payload;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">int</span> ttl = IPH_TTL(iphdr);</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">if</span> (p->tot_len >= <span class="keyword">sizeof</span>(ip_hdr) + <span class="keyword">sizeof</span>(icmp_echo_hdr) && pbuf_header(p, -(s16_t)<span class="keyword">sizeof</span>(ip_hdr)) == 0) {</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  icmp_echo_hdr * hdr = (icmp_echo_hdr *) p->payload;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  if (ntohs(hdr->id) == this_->m_waitingID && ntohs(hdr->seqno) == this_->m_waitingSeq) {</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  this_->m_receivedBytes = p->tot_len;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  this_->m_receivedTTL = ttl;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  uint8_t c = 0;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  xQueueSendToBack(this_->m_queue, &c, portMAX_DELAY);</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  pbuf_free(p);</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> 1;</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>  <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </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> }</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> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor">#endif // #ifdef ARDUINO</span></div><div class="ttc" id="_i_c_m_p_8h_html"><div class="ttname"><a href="_i_c_m_p_8h.html">ICMP.h</a></div><div class="ttdoc">This file contains ICMP (ping) class. </div></div>
<div class="ttc" id="namespacefabgl_html"><div class="ttname"><a href="namespacefabgl.html">fabgl</a></div><div class="ttdef"><b>Definition:</b> <a href="canvas_8cpp_source.html#l00032">canvas.cpp:32</a></div></div>
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