clientRead_8c-source.html
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<title>xmlrpc: reader/commonReader/clientRead.c Source File</title>
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<h1>reader/commonReader/clientRead.c</h1><a href="clientRead_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include <unistd.h></span> <span class="comment">/* for getopt */</span>
<a name="l00002"></a>00002 <span class="preprocessor">#include <stdlib.h></span> <span class="comment">/* for exit */</span>
<a name="l00003"></a>00003 <span class="preprocessor">#include <string.h></span> <span class="comment">/* for memset and stuff */</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include <errno.h></span> <span class="comment">/* for errno */</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="preprocessor">#include "../../include/client.h"</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include "../../include/monitor.h"</span>
<a name="l00008"></a>00008
<a name="l00009"></a><a class="code" href="clientRead_8c.html#3baabeba3e06eb1b8761363a58f8391b">00009</a> <span class="preprocessor">#define GET_MULTIPLIER(size) (((size) - 1) / READBUFSIZE + 1)</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span>
<a name="l00011"></a>00011 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00012"></a>00012 _clientReallocBuffer(<a class="code" href="structtClient.html">tClient</a> * client, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> newSize)
<a name="l00013"></a>00013 {
<a name="l00014"></a>00014 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> newMult = <a class="code" href="clientRead_8c.html#3baabeba3e06eb1b8761363a58f8391b">GET_MULTIPLIER</a>(newSize);
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="keywordflow">if</span> (<a class="code" href="client_8h.html#eefa2efc8515c7f8334de344e8a07fbf">CLIENTMULTMAX</a> < newMult) {
<a name="l00017"></a>00017 <span class="comment">/* line exceeds maximum line length */</span>
<a name="l00018"></a>00018 <span class="keywordflow">return</span> 0;
<a name="l00019"></a>00019 }
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="keywordflow">if</span> (client-><a class="code" href="structtClient.html#c55c66265d03aec3d760a0ed54b08a1f">readBufMult</a> < newMult) {
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="keywordtype">char</span> * newBuffer = calloc(newMult * <a class="code" href="appConfig_8h.html#a0534241791f23ec8098503582406166">READBUFSIZE</a>, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>));
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="keywordflow">if</span> (NULL == newBuffer) {
<a name="l00026"></a>00026 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_ERR, <a class="code" href="monitor_8h.html#b11b9abcce9ac28426ff81c206e28fc8">MON_CRITICAL</a>, <span class="stringliteral">"calloc"</span>,
<a name="l00027"></a>00027 <span class="stringliteral">"calloc for readbuffer[%s] failed"</span>,
<a name="l00028"></a>00028 client-><a class="code" href="structtClient.html#e23a04145b9c0cc1262721432a43c947">remoteAddr</a>);
<a name="l00029"></a>00029
<a name="l00030"></a>00030 exit(EXIT_FAILURE);
<a name="l00031"></a>00031 }
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keywordflow">if</span> (NULL != client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>) {
<a name="l00034"></a>00034 memcpy(newBuffer, client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>, client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a>);
<a name="l00035"></a>00035 free(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>);
<a name="l00036"></a>00036
<a name="l00037"></a>00037 client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a> = newBuffer;
<a name="l00038"></a>00038 client-><a class="code" href="structtClient.html#c55c66265d03aec3d760a0ed54b08a1f">readBufMult</a> = newMult;
<a name="l00039"></a>00039 } <span class="keywordflow">else</span> {
<a name="l00040"></a>00040 <span class="comment">/*</span>
<a name="l00041"></a>00041 <span class="comment"> * we can't get the resized buffer so return the</span>
<a name="l00042"></a>00042 <span class="comment"> * old multiplier</span>
<a name="l00043"></a>00043 <span class="comment"> */</span>
<a name="l00044"></a>00044 newMult = client-><a class="code" href="structtClient.html#c55c66265d03aec3d760a0ed54b08a1f">readBufMult</a>;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keywordflow">return</span> newMult;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keywordtype">int</span>
<a name="l00053"></a><a class="code" href="clientRead_8c.html#6504ff36553f8008b9ee1d52aa977740">00053</a> <a class="code" href="client_8h.html#6504ff36553f8008b9ee1d52aa977740">clientRead</a>(<a class="code" href="structtClient.html">tClient</a> * client)
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keywordtype">int</span> readSize;
<a name="l00056"></a>00056 <span class="keywordtype">char</span> readBuf[<a class="code" href="appConfig_8h.html#a0534241791f23ec8098503582406166">READBUFSIZE</a>];
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">/*</span>
<a name="l00059"></a>00059 <span class="comment"> * initialize values // read data from socket</span>
<a name="l00060"></a>00060 <span class="comment"> */</span>
<a name="l00061"></a>00061 memset(readBuf, 0, <a class="code" href="appConfig_8h.html#a0534241791f23ec8098503582406166">READBUFSIZE</a>);
<a name="l00062"></a>00062 readSize = read(client-><a class="code" href="structtClient.html#fdcb6fae6d4162315adc430dc34e3df0">socket</a>, readBuf, <a class="code" href="appConfig_8h.html#a0534241791f23ec8098503582406166">READBUFSIZE</a>);
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keywordflow">switch</span> (readSize) {
<a name="l00065"></a>00065 <span class="keywordflow">case</span> -1:
<a name="l00066"></a>00066 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_WARNING, <a class="code" href="monitor_8h.html#8eabf82310c059cc80dceaa533a74182">MON_WARNING</a>, <span class="stringliteral">"socket.read"</span>,
<a name="l00067"></a>00067 <span class="stringliteral">"read returns -1 for client[%s]: %s - connection closed"</span>,
<a name="l00068"></a>00068 client-><a class="code" href="structtClient.html#e23a04145b9c0cc1262721432a43c947">remoteAddr</a>, strerror(errno));
<a name="l00069"></a>00069 <span class="keywordflow">break</span>;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordflow">case</span> 0:
<a name="l00072"></a>00072 <span class="keywordflow">break</span>;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordflow">default</span>:
<a name="l00075"></a>00075 <span class="keywordflow">if</span> (!_clientReallocBuffer(client, client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a> + readSize)) {
<a name="l00076"></a>00076 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_WARNING, <a class="code" href="monitor_8h.html#8eabf82310c059cc80dceaa533a74182">MON_WARNING</a>, <span class="stringliteral">"data.longline"</span>,
<a name="l00077"></a>00077 <span class="stringliteral">"got to long line from client[%s] - connection closed"</span>,
<a name="l00078"></a>00078 client-><a class="code" href="structtClient.html#e23a04145b9c0cc1262721432a43c947">remoteAddr</a>);
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keywordflow">return</span> <a class="code" href="client_8h.html#f150df8f008146f177d67862d2569834">READ_ERR_LONGLINE</a>;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keywordflow">if</span> (client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a> +readSize > client-><a class="code" href="structtClient.html#c55c66265d03aec3d760a0ed54b08a1f">readBufMult</a> *<a class="code" href="appConfig_8h.html#a0534241791f23ec8098503582406166">READBUFSIZE</a>) {
<a name="l00084"></a>00084 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_WARNING, <a class="code" href="monitor_8h.html#8eabf82310c059cc80dceaa533a74182">MON_WARNING</a>, <span class="stringliteral">"data.longline"</span>,
<a name="l00085"></a>00085 <span class="stringliteral">"can't allocate enough memory for read on client[%s]"</span>
<a name="l00086"></a>00086 <span class="stringliteral">" - connection closed"</span>,
<a name="l00087"></a>00087 client-><a class="code" href="structtClient.html#e23a04145b9c0cc1262721432a43c947">remoteAddr</a>);
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keywordflow">return</span> <a class="code" href="client_8h.html#4f090ce41ed48b83e309d8fce71db4ab">READ_ERR_MEMORY</a>;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 memcpy(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>+client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a>, readBuf, readSize);
<a name="l00093"></a>00093 client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a> += readSize;
<a name="l00094"></a>00094 <span class="keywordflow">break</span>;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordflow">return</span> readSize;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a><a class="code" href="clientRead_8c.html#47d745b24a58d0152c7b43db75387a79">00100</a> <span class="preprocessor">#define EOB(client,addr) ((addr) -(client)->readBuffer >= (client)->readPos)</span>
<a name="l00101"></a><a class="code" href="clientRead_8c.html#b6f9cfea308c9f485d4b00b60fd2f6cd">00101</a> <span class="preprocessor"></span><span class="preprocessor">#define REMAINING(client,addr) ((client)->readPos - ((addr) - (client)->readBuffer))</span>
<a name="l00102"></a>00102 <span class="preprocessor"></span>
<a name="l00103"></a>00103 <span class="keyword">static</span> <span class="keywordtype">char</span> *
<a name="l00104"></a>00104 _clientGetLineDelimiter(<a class="code" href="structtClient.html">tClient</a> * client, <span class="keyword">const</span> <span class="keywordtype">char</span> * delim, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 <span class="keywordtype">char</span> * foundDelim = memchr(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>, delim[0], client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a>);
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordflow">while</span> (NULL != foundDelim && !<a class="code" href="clientRead_8c.html#47d745b24a58d0152c7b43db75387a79">EOB</a>(client, foundDelim)) {
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0;
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">while</span> (i < len && !<a class="code" href="clientRead_8c.html#47d745b24a58d0152c7b43db75387a79">EOB</a>(client, &(foundDelim[i])) && foundDelim[i] == delim[i]) i++;
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="keywordflow">if</span> (i == len) {
<a name="l00115"></a>00115 <span class="keywordflow">return</span> foundDelim;
<a name="l00116"></a>00116 } <span class="keywordflow">else</span> {
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (!<a class="code" href="clientRead_8c.html#47d745b24a58d0152c7b43db75387a79">EOB</a>(client, ++foundDelim)) {
<a name="l00118"></a>00118 foundDelim = memchr(foundDelim, delim[0], <a class="code" href="clientRead_8c.html#b6f9cfea308c9f485d4b00b60fd2f6cd">REMAINING</a>(client, foundDelim));
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordflow">return</span> NULL;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">/*</span>
<a name="l00127"></a>00127 <span class="comment"> * this returns a newly allocate buffer, with the found line</span>
<a name="l00128"></a>00128 <span class="comment"> * copied to it.</span>
<a name="l00129"></a>00129 <span class="comment"> * The caller has to take care to free this buffer again,</span>
<a name="l00130"></a>00130 <span class="comment"> * after he uses it.</span>
<a name="l00131"></a>00131 <span class="comment"> */</span>
<a name="l00132"></a>00132 <span class="keywordtype">char</span> *
<a name="l00133"></a><a class="code" href="clientRead_8c.html#8363f6facea09bd36e288a51c983aed2">00133</a> <a class="code" href="clientRead_8c.html#8363f6facea09bd36e288a51c983aed2">clientConsumeLine</a>(<a class="code" href="structtClient.html">tClient</a> * client, <span class="keyword">const</span> <span class="keywordtype">char</span> * delim, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> * len)
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 <span class="keywordtype">char</span> * found = <a class="code" href="client_8h.html#9741eb2a0853766868828c722e67c068">clientGetLine</a>(client, delim, len);
<a name="l00136"></a>00136 <span class="keywordtype">char</span> * line = NULL;
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (NULL != found) {
<a name="l00139"></a>00139 line = calloc(*len +1, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>));
<a name="l00140"></a>00140 <a class="code" href="client_8h.html#a920588f9122184bad211ae912d1dbc4">clientRemoveLine</a>(client, delim, len);
<a name="l00141"></a>00141 memcpy(line, found, *len);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keywordflow">return</span> line;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">/*</span>
<a name="l00148"></a>00148 <span class="comment"> * as a side effect this gives sets length of the found line in len</span>
<a name="l00149"></a>00149 <span class="comment"> */</span>
<a name="l00150"></a>00150 <span class="keywordtype">char</span> *
<a name="l00151"></a><a class="code" href="clientRead_8c.html#fbcefe4f20179c643fdff8007235325c">00151</a> <a class="code" href="client_8h.html#9741eb2a0853766868828c722e67c068">clientGetLine</a>(<a class="code" href="structtClient.html">tClient</a> * client, <span class="keyword">const</span> <span class="keywordtype">char</span> * delim, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> * len)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="keywordtype">char</span> * foundDelim = _clientGetLineDelimiter(client, delim, *len);
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordflow">if</span> (NULL != foundDelim) {
<a name="l00156"></a>00156 *len = foundDelim -client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a> -1;
<a name="l00157"></a>00157 <span class="keywordflow">return</span> client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>;
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordflow">return</span> NULL;
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="keywordtype">char</span> *
<a name="l00164"></a><a class="code" href="clientRead_8c.html#8cbd479139f4645f07ae0b7c18202fef">00164</a> <a class="code" href="client_8h.html#a920588f9122184bad211ae912d1dbc4">clientRemoveLine</a>(<a class="code" href="structtClient.html">tClient</a> * client, <span class="keyword">const</span> <span class="keywordtype">char</span> * delim, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> * len)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> lineLen;
<a name="l00167"></a>00167 <span class="keywordtype">char</span> * foundDelim = _clientGetLineDelimiter(client, delim, &lineLen);
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (NULL != foundDelim) {
<a name="l00170"></a>00170 <span class="keywordtype">char</span> * actAddr = client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a> +client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a>;
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (actAddr == foundDelim +*len) {
<a name="l00173"></a>00173
<a name="l00174"></a>00174 memset(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>, 0, client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a>);
<a name="l00175"></a>00175 *len = client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a> = 0;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 } <span class="keywordflow">else</span> {
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> moveSize = actAddr -foundDelim -*len;
<a name="l00180"></a>00180 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> clearSize = actAddr -client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a> -moveSize;
<a name="l00181"></a>00181
<a name="l00182"></a>00182 memmove(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>, foundDelim +*len, moveSize);
<a name="l00183"></a>00183 memset(client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a> +moveSize, 0, clearSize);
<a name="l00184"></a>00184 *len = client-><a class="code" href="structtClient.html#0948ef13430298f28cb48199119136c1">readPos</a> = moveSize;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keywordflow">return</span> client-><a class="code" href="structtClient.html#70a954f8e1e6df925d78b34b9f2f162a">readBuffer</a>;
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordflow">return</span> NULL;
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
</pre></div></div>
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