<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>DTN Reference Implementation: IPConvergenceLayer.cc Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.6 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <h1>IPConvergenceLayer.cc</h1><a href="IPConvergenceLayer_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> <a name="l00002"></a>00002 <span class="comment"> * Copyright 2004-2006 Intel Corporation</span> <a name="l00003"></a>00003 <span class="comment"> * </span> <a name="l00004"></a>00004 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span> <a name="l00005"></a>00005 <span class="comment"> * you may not use this file except in compliance with the License.</span> <a name="l00006"></a>00006 <span class="comment"> * You may obtain a copy of the License at</span> <a name="l00007"></a>00007 <span class="comment"> * </span> <a name="l00008"></a>00008 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span> <a name="l00009"></a>00009 <span class="comment"> * </span> <a name="l00010"></a>00010 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span> <a name="l00011"></a>00011 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span> <a name="l00012"></a>00012 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> <a name="l00013"></a>00013 <span class="comment"> * See the License for the specific language governing permissions and</span> <a name="l00014"></a>00014 <span class="comment"> * limitations under the License.</span> <a name="l00015"></a>00015 <span class="comment"> */</span> <a name="l00016"></a>00016 <a name="l00017"></a>00017 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span> <a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor"># include <<a class="code" href="dtn-config_8h.html">dtn-config.h</a>></span> <a name="l00019"></a>00019 <span class="preprocessor">#endif</span> <a name="l00020"></a>00020 <span class="preprocessor"></span> <a name="l00021"></a>00021 <span class="preprocessor">#include <oasys/io/NetUtils.h></span> <a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="IPConvergenceLayer_8h.html">IPConvergenceLayer.h</a>"</span> <a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="keyword">namespace </span>dtn { <a name="l00025"></a>00025 <a name="l00032"></a>00032 <span class="keywordtype">bool</span> <a name="l00033"></a><a class="code" href="classdtn_1_1IPConvergenceLayer.html#083fe107cf322864a93d727542697fc8">00033</a> <a class="code" href="classdtn_1_1IPConvergenceLayer.html#083fe107cf322864a93d727542697fc8" title="Parse a next hop address specification of the form &lt;host&gt;[:&lt;port&gt;?].">IPConvergenceLayer::parse_nexthop</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* nexthop, <a name="l00034"></a>00034 in_addr_t* addr, u_int16_t* port) <a name="l00035"></a>00035 { <a name="l00036"></a>00036 <span class="keyword">const</span> <span class="keywordtype">char</span>* host; <a name="l00037"></a>00037 std::string tmp; <a name="l00038"></a>00038 <a name="l00039"></a>00039 *addr = INADDR_NONE; <a name="l00040"></a>00040 *port = 0; <a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="comment">// first see if there's a colon in the string -- if so, it should</span> <a name="l00043"></a>00043 <span class="comment">// separate the hostname and port, if not, then the whole string</span> <a name="l00044"></a>00044 <span class="comment">// should be a hostname.</span> <a name="l00045"></a>00045 <span class="comment">//</span> <a name="l00046"></a>00046 <span class="comment">// note that it is invalid to have more than one colon in the</span> <a name="l00047"></a>00047 <span class="comment">// string, as caught by the check after calling strtoul</span> <a name="l00048"></a>00048 <span class="keyword">const</span> <span class="keywordtype">char</span>* colon = strchr(nexthop, <span class="charliteral">':'</span>); <a name="l00049"></a>00049 <span class="keywordflow">if</span> (colon != NULL) { <a name="l00050"></a>00050 <span class="keywordtype">char</span>* endstr; <a name="l00051"></a>00051 u_int32_t portval = strtoul(colon + 1, &endstr, 10); <a name="l00052"></a>00052 <a name="l00053"></a>00053 <span class="keywordflow">if</span> (*endstr != <span class="charliteral">'\0'</span> || portval > 65535) { <a name="l00054"></a>00054 log_warn(<span class="stringliteral">"invalid port %s in next hop '%s'"</span>, <a name="l00055"></a>00055 colon + 1, nexthop); <a name="l00056"></a>00056 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00057"></a>00057 } <a name="l00058"></a>00058 <a name="l00059"></a>00059 *port = (u_int16_t)portval; <a name="l00060"></a>00060 <a name="l00061"></a>00061 tmp.assign(nexthop, colon - nexthop); <a name="l00062"></a>00062 host = tmp.c_str(); <a name="l00063"></a>00063 } <span class="keywordflow">else</span> { <a name="l00064"></a>00064 host = nexthop; <a name="l00065"></a>00065 } <a name="l00066"></a>00066 <a name="l00067"></a>00067 <span class="comment">// now look up the hostname</span> <a name="l00068"></a>00068 <span class="keywordflow">if</span> (oasys::gethostbyname(host, addr) != 0) { <a name="l00069"></a>00069 log_warn(<span class="stringliteral">"can't lookup hostname '%s' in next hop %s"</span>, <a name="l00070"></a>00070 host, nexthop); <a name="l00071"></a>00071 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00072"></a>00072 } <a name="l00073"></a>00073 <a name="l00074"></a>00074 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00075"></a>00075 } <a name="l00076"></a>00076 <a name="l00077"></a>00077 <a name="l00078"></a>00078 } <span class="comment">// namespace dtn</span> </pre></div></div> <hr size="1"><address style="text-align: right;"><small>Generated on Mon Jul 21 14:09:46 2008 for DTN Reference Implementation by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address> </body> </html>