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<h1>ExitPolicy.cpp</h1><a href="_exit_policy_8cpp.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">** This file is part of Vidalia, and is subject to the license terms in the</span>
<a name="l00003"></a>00003 <span class="comment">** LICENSE file, found in the top level directory of this distribution. If you</span>
<a name="l00004"></a>00004 <span class="comment">** did not receive the LICENSE file with this file, you may obtain it from the</span>
<a name="l00005"></a>00005 <span class="comment">** Vidalia source package distributed by the Vidalia Project at</span>
<a name="l00006"></a>00006 <span class="comment">** http://www.vidalia-project.net/. No part of Vidalia, including this file,</span>
<a name="l00007"></a>00007 <span class="comment">** may be copied, modified, propagated, or distributed except according to the</span>
<a name="l00008"></a>00008 <span class="comment">** terms described in the LICENSE file.</span>
<a name="l00009"></a>00009 <span class="comment">*/</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">/*</span>
<a name="l00012"></a>00012 <span class="comment">** \file ExitPolicy.cpp</span>
<a name="l00013"></a>00013 <span class="comment">** \version $Id: ExitPolicy.cpp 3735 2009-04-28 20:28:01Z edmanm $</span>
<a name="l00014"></a>00014 <span class="comment">** \brief Collection of Policy objects representing an exit policy </span>
<a name="l00015"></a>00015 <span class="comment">*/</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="_exit_policy_8h.html">ExitPolicy.h</a>"</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#include <QStringList></span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment">/** Default constructor. */</span>
<a name="l00023"></a><a class="code" href="class_exit_policy.html#a40310febcf3741c6bf40f5f70f68cd95">00023</a> <a class="code" href="class_exit_policy.html#a40310febcf3741c6bf40f5f70f68cd95">ExitPolicy::ExitPolicy</a>()
<a name="l00024"></a>00024 {
<a name="l00025"></a>00025 }
<a name="l00026"></a>00026 <span class="comment"></span>
<a name="l00027"></a>00027 <span class="comment">/** Constructor. Creates an exit policy based on the given type. */</span>
<a name="l00028"></a><a class="code" href="class_exit_policy.html#aa45f8024b10f33abbcf0bc81eecda3df">00028</a> <a class="code" href="class_exit_policy.html#a40310febcf3741c6bf40f5f70f68cd95">ExitPolicy::ExitPolicy</a>(<a class="code" href="class_exit_policy.html#aa76586108b81e24f0bd8dfb51bd77ab8">SpecialExitPolicy</a> exitPolicy)
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <span class="keywordflow">if</span> (exitPolicy == <a class="code" href="class_exit_policy.html#aa76586108b81e24f0bd8dfb51bd77ab8a24858f3513ce54fbe91e759465b16475">Middleman</a>) {
<a name="l00031"></a>00031 <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a> << <a class="code" href="class_policy.html">Policy</a>(<a class="code" href="class_policy.html#a32695726ee7b509714271e77de636677a3294462c7c41d7161c512207b9baf650">Policy::RejectAll</a>);
<a name="l00032"></a>00032 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (exitPolicy == <a class="code" href="class_exit_policy.html#aa76586108b81e24f0bd8dfb51bd77ab8a4a36006dbba2412e631cb58c1f9ef1be">Default</a>) {
<a name="l00033"></a>00033 <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a> << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:25"</span>)
<a name="l00034"></a>00034 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:119"</span>)
<a name="l00035"></a>00035 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:135-139"</span>)
<a name="l00036"></a>00036 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:445"</span>)
<a name="l00037"></a>00037 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:465"</span>)
<a name="l00038"></a>00038 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:587"</span>)
<a name="l00039"></a>00039 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:1214"</span>)
<a name="l00040"></a>00040 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:4661-4666"</span>)
<a name="l00041"></a>00041 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:6346-6429"</span>)
<a name="l00042"></a>00042 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:6699"</span>)
<a name="l00043"></a>00043 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:6881-6999"</span>)
<a name="l00044"></a>00044 << <a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"accept *:*"</span>);
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047 <span class="comment"></span>
<a name="l00048"></a>00048 <span class="comment">/** Parses the given string for a comma-delimited list of policies and </span>
<a name="l00049"></a>00049 <span class="comment"> * adds them to this this policy. */</span>
<a name="l00050"></a><a class="code" href="class_exit_policy.html#a32162f1d63c2485a5a53d7051a03eeb1">00050</a> <a class="code" href="class_exit_policy.html#a40310febcf3741c6bf40f5f70f68cd95">ExitPolicy::ExitPolicy</a>(QString exitPolicy)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <span class="keywordflow">if</span> (!exitPolicy.isEmpty()) {
<a name="l00053"></a>00053 QStringList <a class="code" href="class_exit_policy.html#a0ba9d171634d1e1e346eb664ae579b32">policyList</a> = exitPolicy.split(<span class="stringliteral">","</span>);
<a name="l00054"></a>00054 <span class="keywordflow">foreach</span>(QString policy, policyList) {
<a name="l00055"></a>00055 <a class="code" href="class_exit_policy.html#a33a84b6960ceb03da71a43a31f4230b0">addPolicy</a>(<a class="code" href="class_policy.html">Policy</a>(policy));
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059 <span class="comment"></span>
<a name="l00060"></a>00060 <span class="comment">/** Adds a policy to this exit policy. */</span>
<a name="l00061"></a>00061 <span class="keywordtype">void</span>
<a name="l00062"></a><a class="code" href="class_exit_policy.html#a33a84b6960ceb03da71a43a31f4230b0">00062</a> <a class="code" href="class_exit_policy.html#a33a84b6960ceb03da71a43a31f4230b0">ExitPolicy::addPolicy</a>(<a class="code" href="class_policy.html">Policy</a> policy)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="keywordflow">if</span> (!<a class="code" href="class_exit_policy.html#a04f512b4828d51f4d950bae0b90b3258">contains</a>(policy)) {
<a name="l00065"></a>00065 <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a> << policy;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 <span class="comment"></span>
<a name="l00069"></a>00069 <span class="comment">/** Removes a policy from this exit policy. */</span>
<a name="l00070"></a>00070 <span class="keywordtype">void</span>
<a name="l00071"></a><a class="code" href="class_exit_policy.html#aeafd48ab4738b84474b14156c925863f">00071</a> <a class="code" href="class_exit_policy.html#aeafd48ab4738b84474b14156c925863f">ExitPolicy::removePolicy</a>(<a class="code" href="class_policy.html">Policy</a> policy)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="html_8cpp.html#a4a5dba6492ea149585950c59c210ff47">i</a> = 0; <a class="code" href="html_8cpp.html#a4a5dba6492ea149585950c59c210ff47">i</a> < <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a>.size(); <a class="code" href="html_8cpp.html#a4a5dba6492ea149585950c59c210ff47">i</a>++) {
<a name="l00074"></a>00074 <span class="keywordflow">if</span> (policy == <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a>.at(<a class="code" href="html_8cpp.html#a4a5dba6492ea149585950c59c210ff47">i</a>)) {
<a name="l00075"></a>00075 <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a>.removeAt(<a class="code" href="html_8cpp.html#a4a5dba6492ea149585950c59c210ff47">i</a>);
<a name="l00076"></a>00076 <span class="keywordflow">return</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080 <span class="comment"></span>
<a name="l00081"></a>00081 <span class="comment">/** Adds the ports specified in <b>portList</b> to a list of ports accepted</span>
<a name="l00082"></a>00082 <span class="comment"> * by this exit policy. Ports may be given either individually or as ranges. */</span>
<a name="l00083"></a>00083 <span class="keywordtype">void</span>
<a name="l00084"></a><a class="code" href="class_exit_policy.html#abb358858e8cf140b930943d15b4d743d">00084</a> <a class="code" href="class_exit_policy.html#abb358858e8cf140b930943d15b4d743d">ExitPolicy::addAcceptedPorts</a>(QStringList portList)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keywordflow">foreach</span> (QString port, portList) {
<a name="l00087"></a>00087 <a class="code" href="class_exit_policy.html#a33a84b6960ceb03da71a43a31f4230b0">addPolicy</a>(<a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"accept *:"</span> + port));
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 <span class="comment"></span>
<a name="l00091"></a>00091 <span class="comment">/** Returns true if this exit policy accepts all ports specified in</span>
<a name="l00092"></a>00092 <span class="comment"> * <b>portList</b>. Ports in <b>portList</b> may be given either individually</span>
<a name="l00093"></a>00093 <span class="comment"> * or in ranges (e.g., "6660-6669"). */</span>
<a name="l00094"></a>00094 <span class="keywordtype">bool</span>
<a name="l00095"></a><a class="code" href="class_exit_policy.html#a634ccfc40ed6daa9ed7caa1c8c20c56b">00095</a> <a class="code" href="class_exit_policy.html#a634ccfc40ed6daa9ed7caa1c8c20c56b">ExitPolicy::acceptsPorts</a>(QStringList portList)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keywordflow">foreach</span> (QString port, portList) {
<a name="l00098"></a>00098 <span class="keywordflow">if</span> (!<a class="code" href="class_exit_policy.html#a04f512b4828d51f4d950bae0b90b3258">contains</a>(<a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"accept *:"</span> + port))) {
<a name="l00099"></a>00099 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104 <span class="comment"></span>
<a name="l00105"></a>00105 <span class="comment">/** Adds the ports specified in <b>portList</b> to a list of ports rejected</span>
<a name="l00106"></a>00106 <span class="comment"> * by this exit policy. Ports may be given either individually or as ranges. */</span>
<a name="l00107"></a>00107 <span class="keywordtype">void</span>
<a name="l00108"></a><a class="code" href="class_exit_policy.html#a14f68328010c547221e43238384e81e4">00108</a> <a class="code" href="class_exit_policy.html#a14f68328010c547221e43238384e81e4">ExitPolicy::addRejectedPorts</a>(QStringList portList)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="keywordflow">foreach</span> (QString port, portList) {
<a name="l00111"></a>00111 <a class="code" href="class_exit_policy.html#a33a84b6960ceb03da71a43a31f4230b0">addPolicy</a>(<a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:"</span> + port));
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 <span class="comment"></span>
<a name="l00115"></a>00115 <span class="comment">/** Returns true if this exit policy rejects all ports specified in</span>
<a name="l00116"></a>00116 <span class="comment"> * <b>portList</b>. Ports in <b>portList</b> may be given either individually</span>
<a name="l00117"></a>00117 <span class="comment"> * or in ranges (e.g., "6660-6669"). */</span>
<a name="l00118"></a>00118 <span class="keywordtype">bool</span>
<a name="l00119"></a><a class="code" href="class_exit_policy.html#a45f5f82dfbef2afe395616cd498cfc42">00119</a> <a class="code" href="class_exit_policy.html#a45f5f82dfbef2afe395616cd498cfc42">ExitPolicy::rejectsPorts</a>(QStringList portList)
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <span class="keywordflow">foreach</span> (QString port, portList) {
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (!<a class="code" href="class_exit_policy.html#a04f512b4828d51f4d950bae0b90b3258">contains</a>(<a class="code" href="class_policy.html">Policy</a>(<span class="stringliteral">"reject *:"</span> + port))) {
<a name="l00123"></a>00123 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128 <span class="comment"></span>
<a name="l00129"></a>00129 <span class="comment">/** Returns true if this exit policy contains the given policy. */</span>
<a name="l00130"></a>00130 <span class="keywordtype">bool</span>
<a name="l00131"></a><a class="code" href="class_exit_policy.html#a04f512b4828d51f4d950bae0b90b3258">00131</a> <a class="code" href="class_exit_policy.html#a04f512b4828d51f4d950bae0b90b3258">ExitPolicy::contains</a>(<a class="code" href="class_policy.html">Policy</a> policy)
<a name="l00132"></a>00132 {
<a name="l00133"></a>00133 <a class="code" href="class_policy.html">Policy</a> acceptAll(<a class="code" href="class_policy.html#a32695726ee7b509714271e77de636677a2f44afdc8b7b758626d8c3f8a74e51fe">Policy::AcceptAll</a>);
<a name="l00134"></a>00134 <a class="code" href="class_policy.html">Policy</a> rejectAll(<a class="code" href="class_policy.html#a32695726ee7b509714271e77de636677a3294462c7c41d7161c512207b9baf650">Policy::RejectAll</a>);
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="comment">/* Check for this policy item in the explicitly defined policies */</span>
<a name="l00137"></a>00137 <span class="keywordflow">foreach</span> (<a class="code" href="class_policy.html">Policy</a> <a class="code" href="html_8cpp.html#a6859bd9e7f8c6a4ec0150749bac76c1d">p</a>, <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a>) {
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (p.<a class="code" href="class_policy.html#aa41be5139194b20c22f44ebfae9fc3f2">matches</a>(policy)) {
<a name="l00139"></a>00139 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 <span class="keywordflow">if</span> ((p == acceptAll) || (p == rejectAll)) {
<a name="l00142"></a>00142 <span class="comment">/* This exit policy replaces the default policy, so stop checking */</span>
<a name="l00143"></a>00143 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 <span class="comment">/* Now check the default exit policy */</span>
<a name="l00147"></a>00147 <span class="keywordflow">foreach</span> (<a class="code" href="class_policy.html">Policy</a> p, <a class="code" href="class_exit_policy.html#a40310febcf3741c6bf40f5f70f68cd95">ExitPolicy</a>(<a class="code" href="class_exit_policy.html#aa76586108b81e24f0bd8dfb51bd77ab8a4a36006dbba2412e631cb58c1f9ef1be">Default</a>).policyList()) {
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (p.<a class="code" href="class_policy.html#aa41be5139194b20c22f44ebfae9fc3f2">matches</a>(policy)) {
<a name="l00149"></a>00149 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="comment"></span>
<a name="l00155"></a>00155 <span class="comment">/** Converts the exit policy to a format Tor understands. */</span>
<a name="l00156"></a>00156 QString
<a name="l00157"></a><a class="code" href="class_exit_policy.html#a8178aa3e7eac2aedc6c680a85f1b57f6">00157</a> <a class="code" href="class_exit_policy.html#a8178aa3e7eac2aedc6c680a85f1b57f6">ExitPolicy::toString</a>()
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 QStringList <a class="code" href="class_exit_policy.html#a0ba9d171634d1e1e346eb664ae579b32">policyList</a>;
<a name="l00160"></a>00160 <span class="keywordflow">foreach</span> (<a class="code" href="class_policy.html">Policy</a> policy, <a class="code" href="class_exit_policy.html#a5171cc94377d66e52ec703a9d02cb7fe">_exitPolicy</a>) {
<a name="l00161"></a>00161 policyList << policy.<a class="code" href="class_policy.html#a563b48eb82e0389f088e715be7a11445">toString</a>();
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 <span class="keywordflow">return</span> policyList.join(<span class="stringliteral">","</span>);
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
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