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<div class="title">parse.c</div> </div>
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<a href="parse_8c.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"> * a generic (simple) parser. Use to parse rr's, private key</span>
<a name="l00003"></a>00003 <span class="comment"> * information and /etc/resolv.conf files</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * a Net::DNS like library for C</span>
<a name="l00006"></a>00006 <span class="comment"> * LibDNS Team @ NLnet Labs</span>
<a name="l00007"></a>00007 <span class="comment"> * (c) NLnet Labs, 2005-2006</span>
<a name="l00008"></a>00008 <span class="comment"> * See the file LICENSE for the license</span>
<a name="l00009"></a>00009 <span class="comment"> */</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <<a class="code" href="ldns_2config_8h.html">ldns/config.h</a>></span>
<a name="l00011"></a>00011 <span class="preprocessor">#include <<a class="code" href="ldns_8h.html" title="Including this file will include all ldns files, and define some lookup tables.">ldns/ldns.h</a>></span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="preprocessor">#include <limits.h></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include <strings.h></span>
<a name="l00015"></a>00015
<a name="l00016"></a><a class="code" href="parse_8c.html#a1307844add9def2b41eee475330d9c08">00016</a> <a class="code" href="structldns__struct__lookup__table.html" title="A general purpose lookup table.">ldns_lookup_table</a> <a class="code" href="parse_8c.html#a1307844add9def2b41eee475330d9c08">ldns_directive_types</a>[] = {
<a name="l00017"></a>00017 { <a class="code" href="parse_8h.html#a761a2ab65920950766fed7502f932bb7a01921e71ce58f83c08996290d3690945">LDNS_DIR_TTL</a>, <span class="stringliteral">"$TTL"</span> },
<a name="l00018"></a>00018 { <a class="code" href="parse_8h.html#a761a2ab65920950766fed7502f932bb7adfec44e021d7b4144b352a0714547e92">LDNS_DIR_ORIGIN</a>, <span class="stringliteral">"$ORIGIN"</span> },
<a name="l00019"></a>00019 { <a class="code" href="parse_8h.html#a761a2ab65920950766fed7502f932bb7a72f07f2810d39b5698b266f00a05dd29">LDNS_DIR_INCLUDE</a>, <span class="stringliteral">"$INCLUDE"</span> },
<a name="l00020"></a>00020 { 0, NULL }
<a name="l00021"></a>00021 };
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">/* add max_limit here? */</span>
<a name="l00024"></a>00024 ssize_t
<a name="l00025"></a><a class="code" href="parse_8h.html#a500eff9b2558a70b4ff479f2c2630312">00025</a> <a class="code" href="parse_8c.html#a500eff9b2558a70b4ff479f2c2630312" title="returns a token/char from the stream F.">ldns_fget_token</a>(FILE *f, <span class="keywordtype">char</span> *token, <span class="keyword">const</span> <span class="keywordtype">char</span> *delim, <span class="keywordtype">size_t</span> limit)
<a name="l00026"></a>00026 {
<a name="l00027"></a>00027 <span class="keywordflow">return</span> <a class="code" href="parse_8c.html#a0871ab9743d5418ca159ca3e02cef1d7" title="returns a token/char from the stream F.">ldns_fget_token_l</a>(f, token, delim, limit, NULL);
<a name="l00028"></a>00028 }
<a name="l00029"></a>00029
<a name="l00030"></a>00030 ssize_t
<a name="l00031"></a><a class="code" href="parse_8h.html#a0871ab9743d5418ca159ca3e02cef1d7">00031</a> <a class="code" href="parse_8c.html#a0871ab9743d5418ca159ca3e02cef1d7" title="returns a token/char from the stream F.">ldns_fget_token_l</a>(FILE *f, <span class="keywordtype">char</span> *token, <span class="keyword">const</span> <span class="keywordtype">char</span> *delim, <span class="keywordtype">size_t</span> limit, <span class="keywordtype">int</span> *line_nr)
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <span class="keywordtype">int</span> c, prev_c;
<a name="l00034"></a>00034 <span class="keywordtype">int</span> p; <span class="comment">/* 0 -> no parenthese seen, >0 nr of ( seen */</span>
<a name="l00035"></a>00035 <span class="keywordtype">int</span> com, quoted;
<a name="l00036"></a>00036 <span class="keywordtype">char</span> *t;
<a name="l00037"></a>00037 <span class="keywordtype">size_t</span> i;
<a name="l00038"></a>00038 <span class="keyword">const</span> <span class="keywordtype">char</span> *d;
<a name="l00039"></a>00039 <span class="keyword">const</span> <span class="keywordtype">char</span> *del;
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="comment">/* standard delimeters */</span>
<a name="l00042"></a>00042 <span class="keywordflow">if</span> (!delim) {
<a name="l00043"></a>00043 <span class="comment">/* from isspace(3) */</span>
<a name="l00044"></a>00044 del = <a class="code" href="parse_8h.html#aa07777e1a38886b0c233972bdabefaea">LDNS_PARSE_NORMAL</a>;
<a name="l00045"></a>00045 } <span class="keywordflow">else</span> {
<a name="l00046"></a>00046 del = delim;
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a>00049 p = 0;
<a name="l00050"></a>00050 i = 0;
<a name="l00051"></a>00051 com = 0;
<a name="l00052"></a>00052 quoted = 0;
<a name="l00053"></a>00053 prev_c = 0;
<a name="l00054"></a>00054 t = token;
<a name="l00055"></a>00055 <span class="keywordflow">if</span> (del[0] == <span class="charliteral">'"'</span>) {
<a name="l00056"></a>00056 quoted = 1;
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 <span class="keywordflow">while</span> ((c = getc(f)) != EOF) {
<a name="l00059"></a>00059 <span class="keywordflow">if</span> (c == <span class="charliteral">'\r'</span>) <span class="comment">/* carriage return */</span>
<a name="l00060"></a>00060 c = <span class="charliteral">' '</span>;
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (c == <span class="charliteral">'('</span> && prev_c != <span class="charliteral">'\\'</span> && !quoted) {
<a name="l00062"></a>00062 <span class="comment">/* this only counts for non-comments */</span>
<a name="l00063"></a>00063 <span class="keywordflow">if</span> (com == 0) {
<a name="l00064"></a>00064 p++;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 prev_c = c;
<a name="l00067"></a>00067 <span class="keywordflow">continue</span>;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (c == <span class="charliteral">')'</span> && prev_c != <span class="charliteral">'\\'</span> && !quoted) {
<a name="l00071"></a>00071 <span class="comment">/* this only counts for non-comments */</span>
<a name="l00072"></a>00072 <span class="keywordflow">if</span> (com == 0) {
<a name="l00073"></a>00073 p--;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 prev_c = c;
<a name="l00076"></a>00076 <span class="keywordflow">continue</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keywordflow">if</span> (p < 0) {
<a name="l00080"></a>00080 <span class="comment">/* more ) then ( - close off the string */</span>
<a name="l00081"></a>00081 *t = <span class="charliteral">'\0'</span>;
<a name="l00082"></a>00082 <span class="keywordflow">return</span> 0;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">/* do something with comments ; */</span>
<a name="l00086"></a>00086 <span class="keywordflow">if</span> (c == <span class="charliteral">';'</span> && quoted == 0) {
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (prev_c != <span class="charliteral">'\\'</span>) {
<a name="l00088"></a>00088 com = 1;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (c == <span class="charliteral">'\"'</span> && com == 0 && prev_c != <span class="charliteral">'\\'</span>) {
<a name="l00092"></a>00092 quoted = 1 - quoted;
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordflow">if</span> (c == <span class="charliteral">'\n'</span> && com != 0) {
<a name="l00096"></a>00096 <span class="comment">/* comments */</span>
<a name="l00097"></a>00097 com = 0;
<a name="l00098"></a>00098 *t = <span class="charliteral">' '</span>;
<a name="l00099"></a>00099 <span class="keywordflow">if</span> (line_nr) {
<a name="l00100"></a>00100 *line_nr = *line_nr + 1;
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (p == 0 && i > 0) {
<a name="l00103"></a>00103 <span class="keywordflow">goto</span> tokenread;
<a name="l00104"></a>00104 } <span class="keywordflow">else</span> {
<a name="l00105"></a>00105 prev_c = c;
<a name="l00106"></a>00106 <span class="keywordflow">continue</span>;
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (com == 1) {
<a name="l00111"></a>00111 *t = <span class="charliteral">' '</span>;
<a name="l00112"></a>00112 prev_c = c;
<a name="l00113"></a>00113 <span class="keywordflow">continue</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (c == <span class="charliteral">'\n'</span> && p != 0 && t > token) {
<a name="l00117"></a>00117 <span class="comment">/* in parentheses */</span>
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (line_nr) {
<a name="l00119"></a>00119 *line_nr = *line_nr + 1;
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 *t++ = <span class="charliteral">' '</span>;
<a name="l00122"></a>00122 prev_c = c;
<a name="l00123"></a>00123 <span class="keywordflow">continue</span>;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">/* check if we hit the delim */</span>
<a name="l00127"></a>00127 <span class="keywordflow">for</span> (d = del; *d; d++) {
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (c == *d && i > 0 && prev_c != <span class="charliteral">'\\'</span> && p == 0) {
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (c == <span class="charliteral">'\n'</span> && line_nr) {
<a name="l00130"></a>00130 *line_nr = *line_nr + 1;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 <span class="keywordflow">goto</span> tokenread;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (c != <span class="charliteral">'\0'</span> && c != <span class="charliteral">'\n'</span>) {
<a name="l00136"></a>00136 i++;
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (limit > 0 && i >= limit) {
<a name="l00139"></a>00139 *t = <span class="charliteral">'\0'</span>;
<a name="l00140"></a>00140 <span class="keywordflow">return</span> -1;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (c != <span class="charliteral">'\0'</span> && c != <span class="charliteral">'\n'</span>) {
<a name="l00143"></a>00143 *t++ = c;
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 <span class="keywordflow">if</span> (c == <span class="charliteral">'\\'</span> && prev_c == <span class="charliteral">'\\'</span>)
<a name="l00146"></a>00146 prev_c = 0;
<a name="l00147"></a>00147 <span class="keywordflow">else</span> prev_c = c;
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 *t = <span class="charliteral">'\0'</span>;
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (c == EOF) {
<a name="l00151"></a>00151 <span class="keywordflow">return</span> (ssize_t)i;
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (i == 0) {
<a name="l00155"></a>00155 <span class="comment">/* nothing read */</span>
<a name="l00156"></a>00156 <span class="keywordflow">return</span> -1;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (p != 0) {
<a name="l00159"></a>00159 <span class="keywordflow">return</span> -1;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 <span class="keywordflow">return</span> (ssize_t)i;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 tokenread:
<a name="l00164"></a>00164 <a class="code" href="parse_8c.html#a95423f483aa20df6327f274a4ad0f581" title="skips all of the characters in the given string in the fp, moving the position to the first character...">ldns_fskipcs_l</a>(f, delim, line_nr);
<a name="l00165"></a>00165 *t = <span class="charliteral">'\0'</span>;
<a name="l00166"></a>00166 <span class="keywordflow">if</span> (p != 0) {
<a name="l00167"></a>00167 <span class="keywordflow">return</span> -1;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keywordflow">return</span> (ssize_t)i;
<a name="l00171"></a>00171 }
<a name="l00172"></a>00172
<a name="l00173"></a>00173 ssize_t
<a name="l00174"></a><a class="code" href="parse_8h.html#a22b581152a65f9eed8dc60e25f9bfc1d">00174</a> <a class="code" href="parse_8c.html#a22b581152a65f9eed8dc60e25f9bfc1d">ldns_fget_keyword_data</a>(FILE *f, <span class="keyword">const</span> <span class="keywordtype">char</span> *keyword, <span class="keyword">const</span> <span class="keywordtype">char</span> *k_del, <span class="keywordtype">char</span> *data,
<a name="l00175"></a>00175 <span class="keyword">const</span> <span class="keywordtype">char</span> *d_del, <span class="keywordtype">size_t</span> data_limit)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">return</span> <a class="code" href="parse_8c.html#a9aec3a54a2727f5b7e2adb30691795dd">ldns_fget_keyword_data_l</a>(f, keyword, k_del, data, d_del,
<a name="l00178"></a>00178 data_limit, NULL);
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180
<a name="l00181"></a>00181 ssize_t
<a name="l00182"></a><a class="code" href="parse_8h.html#a9aec3a54a2727f5b7e2adb30691795dd">00182</a> <a class="code" href="parse_8c.html#a9aec3a54a2727f5b7e2adb30691795dd">ldns_fget_keyword_data_l</a>(FILE *f, <span class="keyword">const</span> <span class="keywordtype">char</span> *keyword, <span class="keyword">const</span> <span class="keywordtype">char</span> *k_del, <span class="keywordtype">char</span> *data,
<a name="l00183"></a>00183 <span class="keyword">const</span> <span class="keywordtype">char</span> *d_del, <span class="keywordtype">size_t</span> data_limit, <span class="keywordtype">int</span> *line_nr)
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="comment">/* we assume: keyword|sep|data */</span>
<a name="l00186"></a>00186 <span class="keywordtype">char</span> *fkeyword;
<a name="l00187"></a>00187 ssize_t i;
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="keywordflow">if</span>(strlen(keyword) >= <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a>)
<a name="l00190"></a>00190 <span class="keywordflow">return</span> -1;
<a name="l00191"></a>00191 fkeyword = <a class="code" href="util_8h.html#aaad6949daea3c6cefd01d19300f6e21a">LDNS_XMALLOC</a>(<span class="keywordtype">char</span>, <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a>);
<a name="l00192"></a>00192 <span class="keywordflow">if</span>(!fkeyword)
<a name="l00193"></a>00193 <span class="keywordflow">return</span> -1;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 i = <a class="code" href="parse_8c.html#a500eff9b2558a70b4ff479f2c2630312" title="returns a token/char from the stream F.">ldns_fget_token</a>(f, fkeyword, k_del, <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a>);
<a name="l00196"></a>00196 <span class="keywordflow">if</span>(i==0 || i==-1) {
<a name="l00197"></a>00197 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00198"></a>00198 <span class="keywordflow">return</span> -1;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="comment">/* case??? i instead of strlen? */</span>
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (strncmp(fkeyword, keyword, <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a> - 1) == 0) {
<a name="l00203"></a>00203 <span class="comment">/* whee! */</span>
<a name="l00204"></a>00204 <span class="comment">/* printf("%s\n%s\n", "Matching keyword", fkeyword); */</span>
<a name="l00205"></a>00205 i = <a class="code" href="parse_8c.html#a0871ab9743d5418ca159ca3e02cef1d7" title="returns a token/char from the stream F.">ldns_fget_token_l</a>(f, data, d_del, data_limit, line_nr);
<a name="l00206"></a>00206 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00207"></a>00207 <span class="keywordflow">return</span> i;
<a name="l00208"></a>00208 } <span class="keywordflow">else</span> {
<a name="l00209"></a>00209 <span class="comment">/*printf("no match for %s (read: %s)\n", keyword, fkeyword);*/</span>
<a name="l00210"></a>00210 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00211"></a>00211 <span class="keywordflow">return</span> -1;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215
<a name="l00216"></a>00216 ssize_t
<a name="l00217"></a><a class="code" href="parse_8h.html#a9e2a87caeb3e9d983e461da182e2723b">00217</a> <a class="code" href="parse_8c.html#a9e2a87caeb3e9d983e461da182e2723b" title="returns a token/char from the buffer b.">ldns_bget_token</a>(<a class="code" href="structldns__struct__buffer.html" title="implementation of buffers to ease operations">ldns_buffer</a> *b, <span class="keywordtype">char</span> *token, <span class="keyword">const</span> <span class="keywordtype">char</span> *delim, <span class="keywordtype">size_t</span> limit)
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 <span class="keywordtype">int</span> c, lc;
<a name="l00220"></a>00220 <span class="keywordtype">int</span> p; <span class="comment">/* 0 -> no parenthese seen, >0 nr of ( seen */</span>
<a name="l00221"></a>00221 <span class="keywordtype">int</span> com, quoted;
<a name="l00222"></a>00222 <span class="keywordtype">char</span> *t;
<a name="l00223"></a>00223 <span class="keywordtype">size_t</span> i;
<a name="l00224"></a>00224 <span class="keyword">const</span> <span class="keywordtype">char</span> *d;
<a name="l00225"></a>00225 <span class="keyword">const</span> <span class="keywordtype">char</span> *del;
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="comment">/* standard delimiters */</span>
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (!delim) {
<a name="l00229"></a>00229 <span class="comment">/* from isspace(3) */</span>
<a name="l00230"></a>00230 del = <a class="code" href="parse_8h.html#aa07777e1a38886b0c233972bdabefaea">LDNS_PARSE_NORMAL</a>;
<a name="l00231"></a>00231 } <span class="keywordflow">else</span> {
<a name="l00232"></a>00232 del = delim;
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234
<a name="l00235"></a>00235 p = 0;
<a name="l00236"></a>00236 i = 0;
<a name="l00237"></a>00237 com = 0;
<a name="l00238"></a>00238 quoted = 0;
<a name="l00239"></a>00239 t = token;
<a name="l00240"></a>00240 lc = 0;
<a name="l00241"></a>00241 <span class="keywordflow">if</span> (del[0] == <span class="charliteral">'"'</span>) {
<a name="l00242"></a>00242 quoted = 1;
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordflow">while</span> ((c = <a class="code" href="buffer_8c.html#ac133a49136532ac36150f4378c45bd28" title="returns the next character from a buffer.">ldns_bgetc</a>(b)) != EOF) {
<a name="l00246"></a>00246 <span class="keywordflow">if</span> (c == <span class="charliteral">'\r'</span>) <span class="comment">/* carriage return */</span>
<a name="l00247"></a>00247 c = <span class="charliteral">' '</span>;
<a name="l00248"></a>00248 <span class="keywordflow">if</span> (c == <span class="charliteral">'('</span> && lc != <span class="charliteral">'\\'</span> && !quoted) {
<a name="l00249"></a>00249 <span class="comment">/* this only counts for non-comments */</span>
<a name="l00250"></a>00250 <span class="keywordflow">if</span> (com == 0) {
<a name="l00251"></a>00251 p++;
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253 lc = c;
<a name="l00254"></a>00254 <span class="keywordflow">continue</span>;
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordflow">if</span> (c == <span class="charliteral">')'</span> && lc != <span class="charliteral">'\\'</span> && !quoted) {
<a name="l00258"></a>00258 <span class="comment">/* this only counts for non-comments */</span>
<a name="l00259"></a>00259 <span class="keywordflow">if</span> (com == 0) {
<a name="l00260"></a>00260 p--;
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 lc = c;
<a name="l00263"></a>00263 <span class="keywordflow">continue</span>;
<a name="l00264"></a>00264 }
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (p < 0) {
<a name="l00267"></a>00267 <span class="comment">/* more ) then ( */</span>
<a name="l00268"></a>00268 *t = <span class="charliteral">'\0'</span>;
<a name="l00269"></a>00269 <span class="keywordflow">return</span> 0;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00272"></a>00272 <span class="comment">/* do something with comments ; */</span>
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (c == <span class="charliteral">';'</span> && quoted == 0) {
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (lc != <span class="charliteral">'\\'</span>) {
<a name="l00275"></a>00275 com = 1;
<a name="l00276"></a>00276 }
<a name="l00277"></a>00277 }
<a name="l00278"></a>00278 <span class="keywordflow">if</span> (c == <span class="charliteral">'"'</span> && com == 0 && lc != <span class="charliteral">'\\'</span>) {
<a name="l00279"></a>00279 quoted = 1 - quoted;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281
<a name="l00282"></a>00282 <span class="keywordflow">if</span> (c == <span class="charliteral">'\n'</span> && com != 0) {
<a name="l00283"></a>00283 <span class="comment">/* comments */</span>
<a name="l00284"></a>00284 com = 0;
<a name="l00285"></a>00285 *t = <span class="charliteral">' '</span>;
<a name="l00286"></a>00286 lc = c;
<a name="l00287"></a>00287 <span class="keywordflow">continue</span>;
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289
<a name="l00290"></a>00290 <span class="keywordflow">if</span> (com == 1) {
<a name="l00291"></a>00291 *t = <span class="charliteral">' '</span>;
<a name="l00292"></a>00292 lc = c;
<a name="l00293"></a>00293 <span class="keywordflow">continue</span>;
<a name="l00294"></a>00294 }
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <span class="keywordflow">if</span> (c == <span class="charliteral">'\n'</span> && p != 0) {
<a name="l00297"></a>00297 <span class="comment">/* in parentheses */</span>
<a name="l00298"></a>00298 *t++ = <span class="charliteral">' '</span>;
<a name="l00299"></a>00299 lc = c;
<a name="l00300"></a>00300 <span class="keywordflow">continue</span>;
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="comment">/* check if we hit the delim */</span>
<a name="l00304"></a>00304 <span class="keywordflow">for</span> (d = del; *d; d++) {
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (c == *d && lc != <span class="charliteral">'\\'</span> && p == 0) {
<a name="l00306"></a>00306 <span class="keywordflow">goto</span> tokenread;
<a name="l00307"></a>00307 }
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309
<a name="l00310"></a>00310 i++;
<a name="l00311"></a>00311 <span class="keywordflow">if</span> (limit > 0 && i >= limit) {
<a name="l00312"></a>00312 *t = <span class="charliteral">'\0'</span>;
<a name="l00313"></a>00313 <span class="keywordflow">return</span> -1;
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315 *t++ = c;
<a name="l00316"></a>00316
<a name="l00317"></a>00317 <span class="keywordflow">if</span> (c == <span class="charliteral">'\\'</span> && lc == <span class="charliteral">'\\'</span>) {
<a name="l00318"></a>00318 lc = 0;
<a name="l00319"></a>00319 } <span class="keywordflow">else</span> {
<a name="l00320"></a>00320 lc = c;
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323 *t = <span class="charliteral">'\0'</span>;
<a name="l00324"></a>00324 <span class="keywordflow">if</span> (i == 0) {
<a name="l00325"></a>00325 <span class="comment">/* nothing read */</span>
<a name="l00326"></a>00326 <span class="keywordflow">return</span> -1;
<a name="l00327"></a>00327 }
<a name="l00328"></a>00328 <span class="keywordflow">if</span> (p != 0) {
<a name="l00329"></a>00329 <span class="keywordflow">return</span> -1;
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331 <span class="keywordflow">return</span> (ssize_t)i;
<a name="l00332"></a>00332
<a name="l00333"></a>00333 tokenread:
<a name="l00334"></a>00334 <a class="code" href="parse_8c.html#a7ddb65911b6145e775e8e535dc03f554" title="skips all of the characters in the given string in the buffer, moving the position to the first chara...">ldns_bskipcs</a>(b, delim);
<a name="l00335"></a>00335 *t = <span class="charliteral">'\0'</span>;
<a name="l00336"></a>00336
<a name="l00337"></a>00337 <span class="keywordflow">if</span> (p != 0) {
<a name="l00338"></a>00338 <span class="keywordflow">return</span> -1;
<a name="l00339"></a>00339 }
<a name="l00340"></a>00340 <span class="keywordflow">return</span> (ssize_t)i;
<a name="l00341"></a>00341 }
<a name="l00342"></a>00342
<a name="l00343"></a>00343 <span class="keywordtype">void</span>
<a name="l00344"></a><a class="code" href="parse_8c.html#ac00e4afa1a383bfebdbc916a9fb3c40c">00344</a> <a class="code" href="parse_8c.html#ac00e4afa1a383bfebdbc916a9fb3c40c">ldns_bskipc</a>(<a class="code" href="structldns__struct__buffer.html" title="implementation of buffers to ease operations">ldns_buffer</a> *buffer, <span class="keywordtype">char</span> c)
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="keywordflow">while</span> (c == (<span class="keywordtype">char</span>) ldns_buffer_read_u8_at(buffer, ldns_buffer_position(buffer))) {
<a name="l00347"></a>00347 <span class="keywordflow">if</span> (ldns_buffer_available_at(buffer,
<a name="l00348"></a>00348 buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a> + <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>), <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>))) {
<a name="l00349"></a>00349 buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a> += <span class="keyword">sizeof</span>(char);
<a name="l00350"></a>00350 } <span class="keywordflow">else</span> {
<a name="l00351"></a>00351 <span class="keywordflow">return</span>;
<a name="l00352"></a>00352 }
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354 }
<a name="l00355"></a>00355
<a name="l00356"></a>00356 <span class="keywordtype">void</span>
<a name="l00357"></a><a class="code" href="parse_8h.html#a7ddb65911b6145e775e8e535dc03f554">00357</a> <a class="code" href="parse_8c.html#a7ddb65911b6145e775e8e535dc03f554" title="skips all of the characters in the given string in the buffer, moving the position to the first chara...">ldns_bskipcs</a>(<a class="code" href="structldns__struct__buffer.html" title="implementation of buffers to ease operations">ldns_buffer</a> *buffer, <span class="keyword">const</span> <span class="keywordtype">char</span> *s)
<a name="l00358"></a>00358 {
<a name="l00359"></a>00359 <span class="keywordtype">bool</span> found;
<a name="l00360"></a>00360 <span class="keywordtype">char</span> c;
<a name="l00361"></a>00361 <span class="keyword">const</span> <span class="keywordtype">char</span> *d;
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="keywordflow">while</span>(ldns_buffer_available_at(buffer, buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a>, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>))) {
<a name="l00364"></a>00364 c = (char) ldns_buffer_read_u8_at(buffer, buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a>);
<a name="l00365"></a>00365 found = <span class="keyword">false</span>;
<a name="l00366"></a>00366 <span class="keywordflow">for</span> (d = s; *d; d++) {
<a name="l00367"></a>00367 <span class="keywordflow">if</span> (*d == c) {
<a name="l00368"></a>00368 found = <span class="keyword">true</span>;
<a name="l00369"></a>00369 }
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371 <span class="keywordflow">if</span> (found && buffer-><a class="code" href="structldns__struct__buffer.html#af6eb085e24852584020b4bc5459d4cf5" title="The read/write limit.">_limit</a> > buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a>) {
<a name="l00372"></a>00372 buffer-><a class="code" href="structldns__struct__buffer.html#ac62e89526e2292f430cb815620ee2ebb" title="The current position used for reading/writing.">_position</a> += <span class="keyword">sizeof</span>(char);
<a name="l00373"></a>00373 } <span class="keywordflow">else</span> {
<a name="l00374"></a>00374 <span class="keywordflow">return</span>;
<a name="l00375"></a>00375 }
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377 }
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="keywordtype">void</span>
<a name="l00380"></a><a class="code" href="parse_8c.html#abedad8f2ed6ffe26c04f2a761839c319">00380</a> <a class="code" href="parse_8c.html#abedad8f2ed6ffe26c04f2a761839c319">ldns_fskipc</a>(FILE *fp, <span class="keywordtype">char</span> c)
<a name="l00381"></a>00381 {
<a name="l00382"></a>00382 fp = fp;
<a name="l00383"></a>00383 c = c;
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="keywordtype">void</span>
<a name="l00388"></a><a class="code" href="parse_8h.html#a734bc38729fdf6d0d63c748ef364a9e8">00388</a> <a class="code" href="parse_8c.html#a734bc38729fdf6d0d63c748ef364a9e8" title="skips all of the characters in the given string in the fp, moving the position to the first character...">ldns_fskipcs</a>(FILE *fp, <span class="keyword">const</span> <span class="keywordtype">char</span> *s)
<a name="l00389"></a>00389 {
<a name="l00390"></a>00390 <a class="code" href="parse_8c.html#a95423f483aa20df6327f274a4ad0f581" title="skips all of the characters in the given string in the fp, moving the position to the first character...">ldns_fskipcs_l</a>(fp, s, NULL);
<a name="l00391"></a>00391 }
<a name="l00392"></a>00392
<a name="l00393"></a>00393 <span class="keywordtype">void</span>
<a name="l00394"></a><a class="code" href="parse_8h.html#a95423f483aa20df6327f274a4ad0f581">00394</a> <a class="code" href="parse_8c.html#a95423f483aa20df6327f274a4ad0f581" title="skips all of the characters in the given string in the fp, moving the position to the first character...">ldns_fskipcs_l</a>(FILE *fp, <span class="keyword">const</span> <span class="keywordtype">char</span> *s, <span class="keywordtype">int</span> *line_nr)
<a name="l00395"></a>00395 {
<a name="l00396"></a>00396 <span class="keywordtype">bool</span> found;
<a name="l00397"></a>00397 <span class="keywordtype">int</span> c;
<a name="l00398"></a>00398 <span class="keyword">const</span> <span class="keywordtype">char</span> *d;
<a name="l00399"></a>00399
<a name="l00400"></a>00400 <span class="keywordflow">while</span> ((c = fgetc(fp)) != EOF) {
<a name="l00401"></a>00401 <span class="keywordflow">if</span> (line_nr && c == <span class="charliteral">'\n'</span>) {
<a name="l00402"></a>00402 *line_nr = *line_nr + 1;
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404 found = <span class="keyword">false</span>;
<a name="l00405"></a>00405 <span class="keywordflow">for</span> (d = s; *d; d++) {
<a name="l00406"></a>00406 <span class="keywordflow">if</span> (*d == c) {
<a name="l00407"></a>00407 found = <span class="keyword">true</span>;
<a name="l00408"></a>00408 }
<a name="l00409"></a>00409 }
<a name="l00410"></a>00410 <span class="keywordflow">if</span> (!found) {
<a name="l00411"></a>00411 <span class="comment">/* with getc, we've read too far */</span>
<a name="l00412"></a>00412 ungetc(c, fp);
<a name="l00413"></a>00413 <span class="keywordflow">return</span>;
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415 }
<a name="l00416"></a>00416 }
<a name="l00417"></a>00417
<a name="l00418"></a>00418 ssize_t
<a name="l00419"></a><a class="code" href="parse_8h.html#a285db74d20812bb98686b78a596e972a">00419</a> <a class="code" href="parse_8c.html#a285db74d20812bb98686b78a596e972a">ldns_bget_keyword_data</a>(<a class="code" href="structldns__struct__buffer.html" title="implementation of buffers to ease operations">ldns_buffer</a> *b, <span class="keyword">const</span> <span class="keywordtype">char</span> *keyword, <span class="keyword">const</span> <span class="keywordtype">char</span> *k_del, <span class="keywordtype">char</span>
<a name="l00420"></a>00420 *data, <span class="keyword">const</span> <span class="keywordtype">char</span> *d_del, <span class="keywordtype">size_t</span> data_limit)
<a name="l00421"></a>00421 {
<a name="l00422"></a>00422 <span class="comment">/* we assume: keyword|sep|data */</span>
<a name="l00423"></a>00423 <span class="keywordtype">char</span> *fkeyword;
<a name="l00424"></a>00424 ssize_t i;
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="keywordflow">if</span>(strlen(keyword) >= <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a>)
<a name="l00427"></a>00427 <span class="keywordflow">return</span> -1;
<a name="l00428"></a>00428 fkeyword = <a class="code" href="util_8h.html#aaad6949daea3c6cefd01d19300f6e21a">LDNS_XMALLOC</a>(<span class="keywordtype">char</span>, <a class="code" href="parse_8h.html#a5aa3bc050b1a087437652ed75c921bb7">LDNS_MAX_KEYWORDLEN</a>);
<a name="l00429"></a>00429 <span class="keywordflow">if</span>(!fkeyword)
<a name="l00430"></a>00430 <span class="keywordflow">return</span> -1; <span class="comment">/* out of memory */</span>
<a name="l00431"></a>00431
<a name="l00432"></a>00432 i = <a class="code" href="parse_8c.html#a9e2a87caeb3e9d983e461da182e2723b" title="returns a token/char from the buffer b.">ldns_bget_token</a>(b, fkeyword, k_del, data_limit);
<a name="l00433"></a>00433 <span class="keywordflow">if</span>(i==0 || i==-1) {
<a name="l00434"></a>00434 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00435"></a>00435 <span class="keywordflow">return</span> -1; <span class="comment">/* nothing read */</span>
<a name="l00436"></a>00436 }
<a name="l00437"></a>00437
<a name="l00438"></a>00438 <span class="comment">/* case??? */</span>
<a name="l00439"></a>00439 <span class="keywordflow">if</span> (strncmp(fkeyword, keyword, strlen(keyword)) == 0) {
<a name="l00440"></a>00440 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00441"></a>00441 <span class="comment">/* whee, the match! */</span>
<a name="l00442"></a>00442 <span class="comment">/* retrieve it's data */</span>
<a name="l00443"></a>00443 i = <a class="code" href="parse_8c.html#a9e2a87caeb3e9d983e461da182e2723b" title="returns a token/char from the buffer b.">ldns_bget_token</a>(b, data, d_del, 0);
<a name="l00444"></a>00444 <span class="keywordflow">return</span> i;
<a name="l00445"></a>00445 } <span class="keywordflow">else</span> {
<a name="l00446"></a>00446 <a class="code" href="util_8h.html#a5e13054aa9b3843e97514228a0bbe909">LDNS_FREE</a>(fkeyword);
<a name="l00447"></a>00447 <span class="keywordflow">return</span> -1;
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450
</pre></div></div>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Wed Jan 11 2012 for ldns by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
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