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libdtn-devel-2.6.0-2mdv2009.1.i586.rpm

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<h1>IPConvergenceLayerUtils.cc</h1><a href="IPConvergenceLayerUtils_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 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 &lt;<a class="code" href="dtn-config_8h.html">dtn-config.h</a>&gt;</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 &lt;oasys/io/NetUtils.h&gt;</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="IPConvergenceLayerUtils_8h.html">IPConvergenceLayerUtils.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_1IPConvergenceLayerUtils.html#926fabc9e9ca466445a0a0bce98bb251">00033</a> <a class="code" href="classdtn_1_1IPConvergenceLayerUtils.html#926fabc9e9ca466445a0a0bce98bb251" title="Parse a next hop address specification of the form &amp;lt;host&amp;gt;[:&amp;lt;port&amp;gt;?].">IPConvergenceLayerUtils::parse_nexthop</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* logpath, <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, &amp;endstr, 10);
<a name="l00052"></a>00052         
<a name="l00053"></a>00053         <span class="keywordflow">if</span> (*endstr != <span class="charliteral">'\0'</span> || portval &gt; 65535) {
<a name="l00054"></a>00054             log_warn_p(logpath, <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_p(logpath, <span class="stringliteral">"invalid 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>
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