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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>/opentcp/tftp/tftps.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="main.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> <a class="qindex" href="globals.html">Globals</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindex" href="examples.html">Examples</a> </center><hr><h1>/opentcp/tftp/tftps.c</h1><a href="tftps_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">/*</span>00002 <span class="comment"> *Copyright (c) 2000-2002 Viola Systems Ltd.</span>00003 <span class="comment"> *All rights reserved.</span>00004 <span class="comment"> *</span>00005 <span class="comment"> *Redistribution and use in source and binary forms, with or without </span>00006 <span class="comment"> *modification, are permitted provided that the following conditions </span>00007 <span class="comment"> *are met:</span>00008 <span class="comment"> *</span>00009 <span class="comment"> *1. Redistributions of source code must retain the above copyright </span>00010 <span class="comment"> *notice, this list of conditions and the following disclaimer.</span>00011 <span class="comment"> *</span>00012 <span class="comment"> *2. Redistributions in binary form must reproduce the above copyright </span>00013 <span class="comment"> *notice, this list of conditions and the following disclaimer in the </span>00014 <span class="comment"> *documentation and/or other materials provided with the distribution.</span>00015 <span class="comment"> *</span>00016 <span class="comment"> *3. The end-user documentation included with the redistribution, if </span>00017 <span class="comment"> *any, must include the following acknowledgment:</span>00018 <span class="comment"> * "This product includes software developed by Viola </span>00019 <span class="comment"> * Systems (http://www.violasystems.com/)."</span>00020 <span class="comment"> *</span>00021 <span class="comment"> *Alternately, this acknowledgment may appear in the software itself, </span>00022 <span class="comment"> *if and wherever such third-party acknowledgments normally appear.</span>00023 <span class="comment"> *</span>00024 <span class="comment"> *4. The names "OpenTCP" and "Viola Systems" must not be used to </span>00025 <span class="comment"> *endorse or promote products derived from this software without prior </span>00026 <span class="comment"> *written permission. For written permission, please contact </span>00027 <span class="comment"> *opentcp@opentcp.org.</span>00028 <span class="comment"> *</span>00029 <span class="comment"> *5. Products derived from this software may not be called "OpenTCP", </span>00030 <span class="comment"> *nor may "OpenTCP" appear in their name, without prior written </span>00031 <span class="comment"> *permission of the Viola Systems Ltd.</span>00032 <span class="comment"> *</span>00033 <span class="comment"> *THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED </span>00034 <span class="comment"> *WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF </span>00035 <span class="comment"> *MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. </span>00036 <span class="comment"> *IN NO EVENT SHALL VIOLA SYSTEMS LTD. OR ITS CONTRIBUTORS BE LIABLE </span>00037 <span class="comment"> *FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR </span>00038 <span class="comment"> *CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF </span>00039 <span class="comment"> *SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR </span>00040 <span class="comment"> *BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, </span>00041 <span class="comment"> *WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE </span>00042 <span class="comment"> *OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, </span>00043 <span class="comment"> *EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>00044 <span class="comment"> *====================================================================</span>00045 <span class="comment"> *</span>00046 <span class="comment"> *OpenTCP is the unified open source TCP/IP stack available on a series </span>00047 <span class="comment"> *of 8/16-bit microcontrollers, please see <http://www.opentcp.org>.</span>00048 <span class="comment"> *</span>00049 <span class="comment"> *For more information on how to network-enable your devices, or how to </span>00050 <span class="comment"> *obtain commercial technical support for OpenTCP, please see </span>00051 <span class="comment"> *<http://www.violasystems.com/>.</span>00052 <span class="comment"> */</span>00053 00070 <span class="preprocessor">#include <<a class="code" href="debug_8h.html">inet/debug.h</a>></span>00071 <span class="preprocessor">#include <<a class="code" href="datatypes_8h.html">inet/datatypes.h</a>></span>00072 <span class="preprocessor">#include <<a class="code" href="globalvariables_8h.html">inet/globalvariables.h</a>></span>00073 <span class="preprocessor">#include <<a class="code" href="system_8h.html">inet/system.h</a>></span>00074 <span class="preprocessor">#include <<a class="code" href="timers_8h.html">inet/timers.h</a>></span>00075 <span class="preprocessor">#include <<a class="code" href="tcp__ip_8h.html">inet/tcp_ip.h</a>></span>00076 <span class="preprocessor">#include <<a class="code" href="tftps_8h.html">inet/tftp/tftps.h</a>></span>00077 <a name="l00078"></a><a class="code" href="tftps_8c.html#a9">00078</a> UINT8 <a class="code" href="tftps_8c.html#a9">tftpsapp_init</a> = 0; 00081 <span class="comment">/* TFTPS states */</span>00082 00083 <span class="preprocessor">#define TFTPS_STATE_ENABLED 1</span>00084 <span class="preprocessor"></span><span class="preprocessor">#define TFTPS_STATE_CONNECTED 2</span>00085 <span class="preprocessor"></span>00086 00087 00088 <span class="comment">/* TFTP Error codes */</span>00089 00090 <span class="preprocessor">#define TFTPS_NOTDEFINED 0 </span><span class="comment">/* Not Definet Error */</span>00091 <span class="preprocessor">#define TFTPS_ACCESSVIOLATION 2 </span><span class="comment">/* Access Violation Error */</span>00092 <span class="preprocessor">#define TFTPS_ILLEGALOPERATION 4 </span><span class="comment">/* Not supported Opcode */</span>00093 00094 00095 <span class="comment">/* TFTP Opcodes */</span>00096 00097 <span class="preprocessor">#define TFTPS_OPCODE_WRQ 2 </span><span class="comment">/* Packet is Write Request */</span>00098 <span class="preprocessor">#define TFTPS_OPCODE_DATA 3 </span><span class="comment">/* Data Packet */</span>00099 <span class="preprocessor">#define TFTPS_OPCODE_ACK 4 </span><span class="comment">/* ACK Packet */</span>00100 <span class="preprocessor">#define TFTPS_OPCODE_ERROR 5 </span><span class="comment">/* Error Packet */</span>00101 00110 <span class="keyword">struct</span>00111 <span class="keyword"></span>{00112 UINT8 <a class="code" href="structtcb.html#m0">state</a>;00113 INT8 sochandle; 00114 UINT16 tmrhandle;00115 UINT32 remip;00116 UINT16 <a class="code" href="structtcb.html#m4">remport</a>;00117 UINT16 blocknumber;00118 UINT32 bytecount;00119 UINT8 retries;00120 00121 } <a class="code" href="tftps_8c.html#a18">tftps</a>;00122 00123 00124 <a name="l00136"></a><a class="code" href="tftps_8c.html#a19">00136</a> INT8 <a class="code" href="tftps_8c.html#a4">tftps_init</a> (<span class="keywordtype">void</span>){00137 <span class="comment">/* Already initialized? */</span>00138 00139 <span class="keywordflow">if</span>(tftpsapp_init)00140 <span class="keywordflow">return</span>(1);00141 00142 <span class="comment">/* Get socket handle */</span>00143 00144 <a class="code" href="tftps_8c.html#a18">tftps</a>.sochandle = <a class="code" href="udp_8c.html#a3">udp_getsocket</a>(0, tftps_eventlistener, <a class="code" href="tcp__ip_8h.html#a5">UDP_OPT_SEND_CS</a> | <a class="code" href="tcp__ip_8h.html#a6">UDP_OPT_CHECK_CS</a>);00145 00146 <span class="keywordflow">if</span>(<a class="code" href="tftps_8c.html#a18">tftps</a>.sochandle < 0)00147 <span class="keywordflow">return</span>(-1);00148 00149 <span class="comment">/* Put it to listening mode */</span>00150 00151 <span class="keywordflow">if</span>( <a class="code" href="udp_8c.html#a5">udp_open</a>(<a class="code" href="tftps_8c.html#a18">tftps</a>.sochandle, <a class="code" href="tftps_8h.html#a0">TFTPS_SERVERPORT</a>) < 0 )00152 <span class="keywordflow">return</span>(-1);00153 00154 <span class="comment">/* Get timer handle */</span>00155 00156 <a class="code" href="tftps_8c.html#a18">tftps</a>.tmrhandle = <a class="code" href="timers_8c.html#a2">get_timer</a>();00157 00158 <a class="code" href="tftps_8c.html#a18">tftps</a>.state = TFTPS_STATE_ENABLED;00159 <a class="code" href="tftps_8c.html#a18">tftps</a>.remip = 0;00160 <a class="code" href="tftps_8c.html#a18">tftps</a>.remport = 0;00161 <a class="code" href="tftps_8c.html#a18">tftps</a>.retries = 0;00162 <a class="code" href="tftps_8c.html#a18">tftps</a>.blocknumber = 0;00163 <a class="code" href="tftps_8c.html#a18">tftps</a>.bytecount = 0;00164 <a class="code" href="tftps_8c.html#a9">tftpsapp_init</a> = 1;00165 00166 <span class="keywordflow">return</span>(1); 00167 00168 }00169 00170 <span class="comment">/********************************************************************************</span>00171 <span class="comment">Function: tftps_run</span>00172 <span class="comment"></span>00173 <span class="comment">Parameters: void</span>00174 <span class="comment"> </span>00175 <span class="comment">Return val: void</span>00176 <span class="comment"> </span>00177 <span class="comment">Date: 7.10.2002</span>00178 <span class="comment"></span>00179 <span class="comment">Desc: The main thread of TFTP server that should be called periodically</span>00180 <span class="comment">*********************************************************************************/</span>00181 00182 <span class="keywordtype">void</span> tftps_run (<span class="keywordtype">void</span>)00183 {00184 <span class="keywordflow">if</span>(<a class="code" href="tftps_8c.html#a9">tftpsapp_init</a> == 0)00185 <span class="keywordflow">return</span>;00186 00187 <span class="comment">/* Check for timeouts */</span>00188 00189 <span class="keywordflow">if</span>(<a class="code" href="tftps_8c.html#a18">tftps</a>.state == TFTPS_STATE_CONNECTED) {00190 <span class="keywordflow">if</span>(<a class="code" href="timers_8c.html#a7">check_timer</a>(<a class="code" href="tftps_8c.html#a18">tftps</a>.tmrhandle) == 0)00191 tftps_deletesocket(); 00192 }00193 00194 }00195 00196 INT32 tftps_eventlistener (INT8 cbhandle, UINT8 event, UINT32 remip, UINT16 remport, UINT16 bufindex, UINT16 dlen)00197 {00198 UINT16 opcode;00199 UINT16 i;00200 UINT8 ch;00201 UINT16 u16temp;00202 UINT8 fname[<a class="code" href="tftps_8h.html#a1">TFTPS_FILENAME_MAXLEN</a>];00203 00204 <span class="keywordflow">if</span>(<a class="code" href="tftps_8c.html#a9">tftpsapp_init</a> == 0)00205 <span class="keywordflow">return</span>(-1);00206 00207 <span class="keywordflow">if</span>(cbhandle != <a class="code" href="tftps_8c.html#a18">tftps</a>.sochandle)00208 <span class="keywordflow">return</span>(-1); 00209 00210 <span class="comment">/* If we are on other state than enabled, check that we are talking with the same gyu */</span>00211 00212 <span class="keywordflow">if</span>( <a class="code" href="tftps_8c.html#a18">tftps</a>.state != TFTPS_STATE_ENABLED) {00213 <span class="keywordflow">if</span>(remip != <a class="code" href="tftps_8c.html#a18">tftps</a>.remip)00214 <span class="keywordflow">return</span>(-1);00215 <span class="keywordflow">if</span>(remport != <a class="code" href="tftps_8c.html#a18">tftps</a>.remport)00216 <span class="keywordflow">return</span>(-1); 00217 }00218 00219 <span class="keywordflow">if</span>(dlen < 2)00220 <span class="keywordflow">return</span>(-1);00221 00222 <span class="comment">/* Bind socket */</span>00223 00224 <a class="code" href="tftps_8c.html#a18">tftps</a>.remip = remip;00225 <a class="code" href="tftps_8c.html#a18">tftps</a>.remport = remport; 00226 00227 <span class="comment">/* Get information */</span>00228 00229 <a class="code" href="system_8h.html#a14">NETWORK_RECEIVE_INITIALIZE</a>(bufindex);00230 00231 opcode = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();00232 opcode <<= 8;00233 opcode |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();00234 ⌨️ 快捷键说明
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