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   &#160;<span id="projectnumber">5.4.1</span>
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<a href="tools_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00008"></a>00008 <span class="preprocessor">#ifndef _TOOLS_H</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span><span class="preprocessor">#define _TOOLS_H</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span>
<a name="l00011"></a>00011 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="keyword">extern</span>          <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00013"></a>00013 <span class="preprocessor">#endif</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span>
<a name="l00015"></a>00015 
<a name="l00016"></a>00016 
<a name="l00017"></a>00017     <span class="comment">/*</span>
<a name="l00018"></a>00018 <span class="comment">     * General acros and constants.</span>
<a name="l00019"></a>00019 <span class="comment">     */</span>
<a name="l00020"></a>00020 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#  define SNMP_MAXPATH MAX_PATH</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#  ifdef PATH_MAX</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#    define SNMP_MAXPATH PATH_MAX</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#  else</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#    ifdef MAXPATHLEN</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#      define SNMP_MAXPATH MAXPATHLEN</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#    else</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#      define SNMP_MAXPATH 1024         </span><span class="comment">/* Should be safe enough */</span>
<a name="l00030"></a>00030 <span class="preprocessor">#    endif</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#  endif</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#define SNMP_MAXBUF             (1024 * 4)</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#define SNMP_MAXBUF_MEDIUM      1024</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define SNMP_MAXBUF_SMALL       512</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038 <span class="preprocessor">#define SNMP_MAXBUF_MESSAGE     1500</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#define SNMP_MAXOID             64</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#define SNMP_MAX_CMDLINE_OIDS   128</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="preprocessor">#define SNMP_FILEMODE_CLOSED    0600</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#define SNMP_FILEMODE_OPEN      0644</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span>
<a name="l00046"></a>00046 <span class="preprocessor">#define BYTESIZE(bitsize)       ((bitsize + 7) &gt;&gt; 3)</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#define ROUNDUP8(x)             ( ( (x+7) &gt;&gt; 3 ) * 8 )</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00049"></a>00049 <span class="preprocessor">#define SNMP_STRORNULL(x)       ( x ? x : &quot;(null)&quot;)</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00053"></a><a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6">00053</a> <span class="preprocessor">#define SNMP_FREE(s)    do { if (s) { free((void *)s); s=NULL; } } while(0)</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span>
<a name="l00057"></a><a class="code" href="group__util.html#ga15e5a68e6d21430ddd4312fec64e5027">00057</a> <span class="preprocessor">#define SNMP_SWIPE_MEM(n,s) do { if (n) free((void *)n); n = s; s=NULL; } while(0)</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span>
<a name="l00059"></a>00059     <span class="comment">/*</span>
<a name="l00060"></a>00060 <span class="comment">     * XXX Not optimal everywhere. </span>
<a name="l00061"></a>00061 <span class="comment">     */</span>
<a name="l00064"></a><a class="code" href="group__util.html#ga6356941968481380ea6f4a646df4aaf9">00064</a> <span class="preprocessor">#define SNMP_MALLOC_STRUCT(s)   (struct s *) calloc(1, sizeof(struct s))</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span>
<a name="l00068"></a><a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424">00068</a> <span class="preprocessor">#define SNMP_MALLOC_TYPEDEF(td)  (td *) calloc(1, sizeof(td))</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span>
<a name="l00072"></a><a class="code" href="group__util.html#ga190280d08c828c153ec2755b9c263227">00072</a> <span class="preprocessor">#define SNMP_ZERO(s,l)  do { if (s) memset(s, 0, l); } while(0)</span>
<a name="l00073"></a>00073 <span class="preprocessor"></span>
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="preprocessor">#define TOUPPER(c)      (c &gt;= &#39;a&#39; &amp;&amp; c &lt;= &#39;z&#39; ? c - (&#39;a&#39; - &#39;A&#39;) : c)</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span><span class="preprocessor">#define TOLOWER(c)      (c &gt;= &#39;A&#39; &amp;&amp; c &lt;= &#39;Z&#39; ? c + (&#39;a&#39; - &#39;A&#39;) : c)</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span>
<a name="l00078"></a>00078 <span class="preprocessor">#define HEX2VAL(s) \</span>
<a name="l00079"></a>00079 <span class="preprocessor">        ((isalpha(s) ? (TOLOWER(s)-&#39;a&#39;+10) : (TOLOWER(s)-&#39;0&#39;)) &amp; 0xf)</span>
<a name="l00080"></a>00080 <span class="preprocessor"></span><span class="preprocessor">#define VAL2HEX(s)      ( (s) + (((s) &gt;= 10) ? (&#39;a&#39;-10) : &#39;0&#39;) )</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span>
<a name="l00082"></a>00082 
<a name="l00085"></a><a class="code" href="group__util.html#gaa70d7b83d1001df95cf64280e9545564">00085</a> <span class="preprocessor">#define SNMP_MAX(a,b) ((a) &gt; (b) ? (a) : (b))</span>
<a name="l00086"></a>00086 <span class="preprocessor"></span>
<a name="l00089"></a><a class="code" href="group__util.html#gad1976dec11cfd62abaa4ecedad948f18">00089</a> <span class="preprocessor">#define SNMP_MIN(a,b) ((a) &gt; (b) ? (b) : (a))</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span>
<a name="l00091"></a>00091 <span class="preprocessor">#ifndef FALSE</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="preprocessor">#define FALSE 0</span>
<a name="l00093"></a>00093 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00094"></a>00094 <span class="preprocessor"></span><span class="preprocessor">#ifndef TRUE</span>
<a name="l00095"></a>00095 <span class="preprocessor"></span><span class="preprocessor">#define TRUE  1</span>
<a name="l00096"></a>00096 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00097"></a>00097 <span class="preprocessor"></span>
<a name="l00098"></a>00098     <span class="comment">/*</span>
<a name="l00099"></a>00099 <span class="comment">     * QUIT the FUNction:</span>
<a name="l00100"></a>00100 <span class="comment">     *      e       Error code variable</span>
<a name="l00101"></a>00101 <span class="comment">     *      l       Label to goto to cleanup and get out of the function.</span>
<a name="l00102"></a>00102 <span class="comment">     *</span>
<a name="l00103"></a>00103 <span class="comment">     * XXX  It would be nice if the label could be constructed by the</span>
<a name="l00104"></a>00104 <span class="comment">     *      preprocessor in context.  Limited to a single error return value.</span>
<a name="l00105"></a>00105 <span class="comment">     *      Temporary hack at best.</span>
<a name="l00106"></a>00106 <span class="comment">     */</span>
<a name="l00107"></a>00107 <span class="preprocessor">#define QUITFUN(e, l)                   \</span>
<a name="l00108"></a>00108 <span class="preprocessor">        if ( (e) != SNMPERR_SUCCESS) {  \</span>
<a name="l00109"></a>00109 <span class="preprocessor">                rval = SNMPERR_GENERR;  \</span>
<a name="l00110"></a>00110 <span class="preprocessor">                goto l ;                \</span>
<a name="l00111"></a>00111 <span class="preprocessor">        }</span>
<a name="l00112"></a>00112 <span class="preprocessor"></span>
<a name="l00113"></a>00113     <span class="comment">/*</span>
<a name="l00114"></a>00114 <span class="comment">     * DIFFTIMEVAL</span>
<a name="l00115"></a>00115 <span class="comment">     *      Set &lt;diff&gt; to the difference between &lt;now&gt; (current) and &lt;then&gt; (past).</span>
<a name="l00116"></a>00116 <span class="comment">     *</span>
<a name="l00117"></a>00117 <span class="comment">     * ASSUMES that all inputs are (struct timeval)&#39;s.</span>
<a name="l00118"></a>00118 <span class="comment">     * Cf. system.c:calculate_time_diff().</span>
<a name="l00119"></a>00119 <span class="comment">     */</span>
<a name="l00120"></a>00120 <span class="preprocessor">#define DIFFTIMEVAL(now, then, diff)                    \</span>
<a name="l00121"></a>00121 <span class="preprocessor">{                                                       \</span>
<a name="l00122"></a>00122 <span class="preprocessor">        now.tv_sec--;                                   \</span>
<a name="l00123"></a>00123 <span class="preprocessor">        now.tv_usec += 1000000L;                        \</span>
<a name="l00124"></a>00124 <span class="preprocessor">        diff.tv_sec  = now.tv_sec  - then.tv_sec;       \</span>
<a name="l00125"></a>00125 <span class="preprocessor">        diff.tv_usec = now.tv_usec - then.tv_usec;      \</span>
<a name="l00126"></a>00126 <span class="preprocessor">        if (diff.tv_usec &gt; 1000000L){                   \</span>
<a name="l00127"></a>00127 <span class="preprocessor">                diff.tv_usec -= 1000000L;               \</span>
<a name="l00128"></a>00128 <span class="preprocessor">                diff.tv_sec++;                          \</span>
<a name="l00129"></a>00129 <span class="preprocessor">        }                                               \</span>
<a name="l00130"></a>00130 <span class="preprocessor">}</span>
<a name="l00131"></a>00131 <span class="preprocessor"></span>
<a name="l00132"></a>00132 
<a name="l00133"></a>00133     <span class="comment">/*</span>
<a name="l00134"></a>00134 <span class="comment">     * ISTRANSFORM</span>
<a name="l00135"></a>00135 <span class="comment">     * ASSUMES the minimum length for ttype and toid.</span>
<a name="l00136"></a>00136 <span class="comment">     */</span>
<a name="l00137"></a>00137 <span class="preprocessor">#define USM_LENGTH_OID_TRANSFORM        10</span>
<a name="l00138"></a>00138 <span class="preprocessor"></span>
<a name="l00139"></a>00139 <span class="preprocessor">#define ISTRANSFORM(ttype, toid)                                        \</span>
<a name="l00140"></a>00140 <span class="preprocessor">        !snmp_oid_compare(ttype, USM_LENGTH_OID_TRANSFORM,              \</span>
<a name="l00141"></a>00141 <span class="preprocessor">                usm ## toid ## Protocol, USM_LENGTH_OID_TRANSFORM)</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span>
<a name="l00143"></a>00143 <span class="preprocessor">#define ENGINETIME_MAX  2147483647      </span><span class="comment">/* ((2^31)-1) */</span>
<a name="l00144"></a>00144 <span class="preprocessor">#define ENGINEBOOT_MAX  2147483647      </span><span class="comment">/* ((2^31)-1) */</span>
<a name="l00145"></a>00145 
<a name="l00146"></a>00146 
<a name="l00147"></a>00147 
<a name="l00148"></a>00148 
<a name="l00149"></a>00149     <span class="comment">/*</span>
<a name="l00150"></a>00150 <span class="comment">     * Prototypes.</span>
<a name="l00151"></a>00151 <span class="comment">     */</span>
<a name="l00152"></a>00152 
<a name="l00153"></a>00153     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga7b42d706225a788adcfeaad9b24717de" title="This function increase the size of the buffer pointed at by *buf, which is initially of size *buf_len...">snmp_realloc</a>(u_char ** buf, <span class="keywordtype">size_t</span> * buf_len);
<a name="l00154"></a>00154 
<a name="l00155"></a>00155     <span class="keywordtype">void</span>            <a class="code" href="group__util.html#ga26a103aafde4d6dcf72c8e30c7d05bd9" title="zeros memory before freeing it.">free_zero</a>(<span class="keywordtype">void</span> *buf, <span class="keywordtype">size_t</span> size);
<a name="l00156"></a>00156 
<a name="l00157"></a>00157     u_char         *<a class="code" href="group__util.html#ga76b7f8b21c44e2f8b274a0db8b57d5a1" title="Returns pointer to allocaed &amp; set buffer on success, size contains number of random bytes filled...">malloc_random</a>(<span class="keywordtype">size_t</span> * size);
<a name="l00158"></a>00158     u_char         *malloc_zero(<span class="keywordtype">size_t</span> size);
<a name="l00159"></a>00159     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga623784b8aac0469fcd84e24ccdeda0bd" title="Duplicates a memory block.">memdup</a>(u_char ** to, <span class="keyword">const</span> u_char * from, <span class="keywordtype">size_t</span> size);
<a name="l00160"></a>00160 
<a name="l00161"></a>00161     u_int           <a class="code" href="group__util.html#gafb1770dd180ccdd29dafc90cf50d3204" title="converts binary to hexidecimal">binary_to_hex</a>(<span class="keyword">const</span> u_char * input, <span class="keywordtype">size_t</span> len,
<a name="l00162"></a>00162                                   <span class="keywordtype">char</span> **output);
<a name="l00163"></a>00163                     <span class="comment">/* preferred */</span>
<a name="l00164"></a>00164     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga8c1a230e987560600de9f81e55480c0a" title="convert an ASCII hex string (with specified delimiters) to binary">netsnmp_hex_to_binary</a>(u_char ** buf, <span class="keywordtype">size_t</span> * buf_len,
<a name="l00165"></a>00165                                          <span class="keywordtype">size_t</span> * offset, <span class="keywordtype">int</span> allow_realloc,
<a name="l00166"></a>00166                                          <span class="keyword">const</span> <span class="keywordtype">char</span> *hex, <span class="keyword">const</span> <span class="keywordtype">char</span> *delim);
<a name="l00167"></a>00167                     <span class="comment">/* calls netsnmp_hex_to_binary w/delim of &quot; &quot; */</span>
<a name="l00168"></a>00168     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga1a102bbccc7a51e7f98b0c1da33497db" title="convert an ASCII hex string to binary">snmp_hex_to_binary</a>(u_char ** buf, <span class="keywordtype">size_t</span> * buf_len,
<a name="l00169"></a>00169                                        <span class="keywordtype">size_t</span> * offset, <span class="keywordtype">int</span> allow_realloc,
<a name="l00170"></a>00170                                        <span class="keyword">const</span> <span class="keywordtype">char</span> *hex);
<a name="l00171"></a>00171                     <span class="comment">/* handles odd lengths */</span>
<a name="l00172"></a>00172     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#gafbe460eb2f249c0d347ab38d94a802ae" title="hex_to_binary2">hex_to_binary2</a>(<span class="keyword">const</span> u_char * input, <span class="keywordtype">size_t</span> len,
<a name="l00173"></a>00173                                    <span class="keywordtype">char</span> **output);
<a name="l00174"></a>00174 
<a name="l00175"></a>00175     <span class="keywordtype">int</span>             snmp_decimal_to_binary(u_char ** buf, <span class="keywordtype">size_t</span> * buf_len,
<a name="l00176"></a>00176                                            <span class="keywordtype">size_t</span> * out_len,
<a name="l00177"></a>00177                                            <span class="keywordtype">int</span> allow_realloc,
<a name="l00178"></a>00178                                            <span class="keyword">const</span> <span class="keywordtype">char</span> *decimal);
<a name="l00179"></a>00179 <span class="preprocessor">#define snmp_cstrcat(b,l,o,a,s) snmp_strcat(b,l,o,a,(const u_char *)s)</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span>    <span class="keywordtype">int</span>             snmp_strcat(u_char ** buf, <span class="keywordtype">size_t</span> * buf_len,
<a name="l00181"></a>00181                                 <span class="keywordtype">size_t</span> * out_len, <span class="keywordtype">int</span> allow_realloc,
<a name="l00182"></a>00182                                 <span class="keyword">const</span> u_char * s);
<a name="l00183"></a>00183     <span class="keywordtype">char</span>           *<a class="code" href="group__util.html#ga06867ff53bb86b745f23c52aa5e78829" title="copies a (possible) unterminated string of a given length into a new buffer and null terminates it as...">netsnmp_strdup_and_null</a>(<span class="keyword">const</span> u_char * from,
<a name="l00184"></a>00184                                             <span class="keywordtype">size_t</span> from_len);
<a name="l00185"></a>00185 
<a name="l00186"></a>00186     <span class="keywordtype">void</span>            dump_chunk(<span class="keyword">const</span> <span class="keywordtype">char</span> *debugtoken, <span class="keyword">const</span> <span class="keywordtype">char</span> *title,
<a name="l00187"></a>00187                                <span class="keyword">const</span> u_char * buf, <span class="keywordtype">int</span> size);
<a name="l00188"></a>00188     <span class="keywordtype">char</span>           *dump_snmpEngineID(<span class="keyword">const</span> u_char * buf, <span class="keywordtype">size_t</span> * buflen);
<a name="l00189"></a>00189 
<a name="l00190"></a>00190     <span class="keyword">typedef</span> <span class="keywordtype">void</span>   *marker_t;
<a name="l00191"></a>00191     marker_t        <a class="code" href="group__util.html#gadd8427286d982acba71489f0a3012dfb" title="create a new time marker.">atime_newMarker</a>(<span class="keywordtype">void</span>);
<a name="l00192"></a>00192     <span class="keywordtype">void</span>            <a class="code" href="group__util.html#gaac74a9b90a9483019e8872d0c923567c" title="set a time marker.">atime_setMarker</a>(marker_t pm);
<a name="l00193"></a>00193     <span class="keywordtype">long</span>            <a class="code" href="group__util.html#gaee67c956c1fcd842e739e2a8e9f57365" title="Returns the difference (in msec) between the two markers.">atime_diff</a>(marker_t first, marker_t second);
<a name="l00194"></a>00194     u_long          <a class="code" href="group__util.html#ga1d44372c028e3c38de4161c52c226948" title="Returns the difference (in u_long msec) between the two markers.">uatime_diff</a>(marker_t first, marker_t second);       <span class="comment">/* 1/1000th sec */</span>
<a name="l00195"></a>00195     u_long          <a class="code" href="group__util.html#ga96b8aa8b0c5556f923dcfe9b56443606" title="Returns the difference (in u_long 1/100th secs) between the two markers (functionally this is what sy...">uatime_hdiff</a>(marker_t first, marker_t second);      <span class="comment">/* 1/100th sec */</span>
<a name="l00196"></a>00196     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga43a00cd4f3496eb42fb99285a2da8481" title="Test: Has (marked time plus delta) exceeded current time (in msec) ? Returns 0 if test fails or canno...">atime_ready</a>(marker_t pm, <span class="keywordtype">int</span> deltaT);
<a name="l00197"></a>00197     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#ga15b21d7af289044a10e22b6111f43523" title="Test: Has (marked time plus delta) exceeded current time (in msec) ? Returns 0 if test fails or canno...">uatime_ready</a>(marker_t pm, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> deltaT);
<a name="l00198"></a>00198 
<a name="l00199"></a>00199     <span class="keywordtype">int</span>             <a class="code" href="group__util.html#gad8f70e6754e69772a113c07f8607d5eb" title="Return the number of timeTicks since the given marker.">marker_tticks</a>(marker_t pm);
<a name="l00200"></a>00200     <span class="keywordtype">int</span>             timeval_tticks(<span class="keyword">struct</span> timeval *tv);
<a name="l00201"></a>00201     <span class="keywordtype">char</span>            *<a class="code" href="group__util.html#ga1816d1ce1e701fcbce27b20159433313" title="Non Windows: Returns a pointer to the desired environment variable or NULL if the environment variabl...">netsnmp_getenv</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name);
<a name="l00202"></a>00202 
<a name="l00203"></a>00203     <span class="keywordtype">int</span>             netsnmp_addrstr_hton(<span class="keywordtype">char</span> *ptr, <span class="keywordtype">size_t</span> len);
<a name="l00204"></a>00204 
<a name="l00205"></a>00205 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00206"></a>00206 <span class="preprocessor"></span>}
<a name="l00207"></a>00207 <span class="preprocessor">#endif</span>
<a name="l00208"></a>00208 <span class="preprocessor"></span><span class="preprocessor">#endif                          </span><span class="comment">/* _TOOLS_H */</span>
<a name="l00209"></a>00209 <span class="comment">/* @} */</span>
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