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PowerDNS Versatile Database Driven Nameserver
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Copyright (C) 2002 - 2005 PowerDNS.COM BV
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# pragma warning ( disable: 4786 )
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#include "ahuexception.hh"
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#include "zoneparser.hh"
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extern const char *bind_directory;
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void ZoneParser::setDirectory(const string &dir)
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void ZoneParser::parse(const string &fname, const string &origin, unsigned int domain_id)
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d_filename=fname.c_str();
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zonein=gzopen(fname.c_str(),"r");
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zonein=gzdopen(STDIN_FILENO,"r");
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throw AhuException("Unable to open zonefile '"+fname+"': "+stringerror());
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while(gzgets(fds.top(), cline,sizeof(cline)-1)) {
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chomp(line," \x1a\r\n");
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if(line[0]=='$' && (!line.find("$INCLUDE ") || !line.find("$include "))) {
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stringtok(parts,line," \t\n");
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throw AhuException("Invalid $INCLUDE statement in zonefile '"+fname+"'");
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string filename=unquotify(parts[1]);
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filename=d_dir+"/"+filename;
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gzFile fp=gzopen(filename.c_str(),"r");
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throw AhuException("Unable to open zonefile '"+filename+"' included from '"+fname+"': "+stringerror());
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if(eatLine(line,rec))
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for(vector<Record>::const_iterator i=rec.begin();i!=rec.end();++i)
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d_callback(domain_id, i->name, i->qtype, i->content, i->ttl, i->prio);
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// if(ferror(fds.top())) {
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// fclose(fds.top());
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// throw AhuException("Error reading from file '"+fname+"': "+stringerror());
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void ZoneParser::parse(const string &fname, const string &origin, vector<Record>&records)
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d_filename=fname.c_str();
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gzFile zonein=gzopen(fname.c_str(),"r");
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throw AhuException("Unable to open zonefile '"+fname+"': "+stringerror());
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while(!fds.empty()) {
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while(gzgets(fds.top(),cline, sizeof(cline)-1)) {
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chomp(line," \x1a\r\n");
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if(line[0]=='$' && (!line.find("$INCLUDE ") || !line.find("$include "))) {
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vector<string> parts;
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stringtok(parts,line," \t\r\n");
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throw AhuException("Invalid $INCLUDE statement in zonefile '"+fname+"'");
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string filename=unquotify(parts[1]);
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gzFile fp=gzopen(filename.c_str(),"r");
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throw AhuException("Unable to open zonefile '"+filename+"' included from '"+fname+"': "+stringerror());
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if(eatLine(line,rec))
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for(vector<Record>::const_iterator i=rec.begin();i!=rec.end();++i)
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records.push_back(*i);
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// if(ferror(fds.top())) {
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// fclose(fds.top());
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// throw AhuException("Error reading from file '"+fname+"': "+stringerror());
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void ZoneParser::fillRec(const string &qname, const string &qtype, const string &content, int ttl, int prio, vector<Record>&recs)
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if(!QType::chartocode(qtype.c_str()))
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throw AhuException("Unknown qtype '"+qtype+"' on line "+itoa(d_lineno)+" of file '"+d_filename+"'");
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// cerr<<"filled with type: "<<rec.qtype<<", "<<QType::chartocode(qtype.c_str())<<": "<<content<<endl;
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void ZoneParser::cutOff(string &line, const string &delim)
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string::size_type pos=line.find_first_of(delim);
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if(pos==string::npos)
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bool ZoneParser::eatLine(const string& line, vector<Record> &rec)
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static string lastfirstword;
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string::size_type pos=string::npos;
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pos=line.find_first_of("(");
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if(pos!=string::npos) { // this is a line that continues
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tline=line.substr(0,pos);
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tline=line; // complete & boring line
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else { // continuation
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if(pos==string::npos) { // middle part
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tline.append(line.substr(0,pos)); // end part, we have a complete line!
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// full & unparenthesised line now in tline!
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// cout<<"line: '"<<tline<<"'"<<endl;
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if(tline.empty() || tline.find_first_not_of(" \t\n")==string::npos) {
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if(isspace(tline[0]))
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tline=lastfirstword+"\t"+tline;
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vector<string> parts;
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stringtok(parts,tline," \t"); // we used to strip " here
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if(parts[0][0]!='$' && !isspace(parts[0][0]))
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lastfirstword=parts[0];
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// for_each(parts.begin(),parts.end(),print);
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return parseLine(parts,rec);
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ZoneParser::~ZoneParser()
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void ZoneParser::setCallback(callback_t *callback)
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bool ZoneParser::isNumber(const string &s)
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for(string::const_iterator i=s.begin();
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if(*i=='M' || *i=='D' || *i=='H' || *i=='W' || *i=='m' || *i=='d' || *i=='h' || *i=='w') // last character
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bool ZoneParser::isType(const string &s)
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bool ZoneParser::isClass(const string &s)
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return (s.size()==2 && (s=="IN" || s=="CH" || s=="HS" || s=="in" || s=="ch" || s=="hs"));
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unsigned int ZoneParser::zoneNumber(const string &str)
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unsigned int val=atoi(str.c_str());
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char lc=toupper(str[str.length()-1]);
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throw AhuException("Unable to parse "+d_origin+" time specification '"+str+"' at line "+itoa(d_lineno));
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/** this parser handles 10 cases (sigh)
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1) qname TTL CLASS QTYPE *
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2) qname CLASS TTL QTYPE *
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3) qname CLASS QTYPE *
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And then everything again with a space first character, which implies 'same as last name'
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void ZoneParser::soaCanonic(string &content)
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stringtok(parts,content," \t");
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// 'ns.naamserver.net. hostmaster.naamserver.net 2001102501 8H 2H 1W 1D'
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// FIXME: what about 'ns hostmaster.naamserver.net 2001102501 8H 2H 1W 1D'?
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for(vector<string>::const_iterator i=parts.begin();i!=parts.end();++i,++pos) {
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newcontent.append(1,' ');
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newcontent.append( canonic( *i ) );
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unsigned int val=zoneNumber(*i);
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newcontent.append(1,' ');
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newcontent.append(itoa(val));
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string ZoneParser::expandWord(const string &line, int value)
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for(string::const_iterator i=line.begin();i!=line.end();++i) {
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if(!escape && *i=='$') {
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if(i+2<line.end() && *(i+1)=='{') { // shit
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string::const_iterator k=(i+=2);
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while(k++!=line.end() && *k!='}')
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throw AhuException("Malformed $GENERATE statement");
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//copy(i,k,back_inserter(spec));
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for ( string::const_iterator a = i; a != k; ++a )
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vector<string> partjes;
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stringtok(partjes,spec,",");
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throw AhuException("Malformed $GENERATE statement: '"+spec+"'");
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value+=atoi(partjes[0].c_str());
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if(partjes.size()>=2)
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width=atoi(partjes[1].c_str());
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if(partjes.size()>=3)
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format.append(1,radix);
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snprintf(tmp,19,format.c_str(),value);
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newline.append(itoa(value));
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newline.append(1,*i);
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string ZoneParser::canonic(const string& dom)
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if(dom[dom.size()-1]!='.')
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return dom.substr(0,dom.size()-1);
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bool ZoneParser::parseLine(const vector<string>&words, vector<Record>&rec)
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if(!Utility::strcasecmp(words[0].c_str(),"$ORIGIN") && words.size()>1) {
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d_origin=canonic(words[1]);
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else if(!Utility::strcasecmp(words[0].c_str(),"$TTL") && words.size()>1) {
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d_ttl=zoneNumber(words[1]);
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else if(!Utility::strcasecmp(words[0].c_str(),"$GENERATE") && words.size()>1) {
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// $GENERATE 1-127 $ CNAME $.0
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string range=words[1]; // 1-127 means 1...127 (including 127). 1-127/2 is 1..3..5..
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stringtok(parts,range,"-/");
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if(parts.size()<2 || parts.size()>3)
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throw AhuException("Malformed $GENERATE on line "+itoa(d_lineno)+" of "+d_filename);
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int start, stop, step=1;
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start=atoi(parts[0].c_str());
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stop=atoi(parts[1].c_str());
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step=atoi(parts[2].c_str());
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vector<string>newwords;
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for(int i=start;i<=stop;++i) {
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for(unsigned int j=2;j<words.size();++j) {
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newwords.push_back(expandWord(words[j],i));
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parseLine(newwords, rec);
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throw AhuException("Unhandled command '"+words[0]+"' on line "+itoa(d_lineno)+" of '"+d_filename+"'");
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if(words.size()==1 && words[0]==";")
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throw AhuException("Short line "+itoa(d_lineno)+" in '"+d_filename+"': "+itoa(words.size())+ " words. Probably due to repeated record without domainname");
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string qname=words[0];
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if(isNumber(words[1])) // 1 || 4
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ttl=zoneNumber(words[1]);
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if(isClass(words[2]))
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else /* 2 || 3 || 5 */
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if(!isClass(words[1]))
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if(isNumber(words[2]))
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ttl=zoneNumber(words[2]);
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else if(isType(words[2]))
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throw AhuException("Funky parse case on line "+itoa(d_lineno));
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if(qname[qname.size()-1]!='.')
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// cerr<<qname<<", "<<qclass<<", "<<qtype<<", "<<ttl<<", rest from field "<<cpos<<endl;
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int left=words.size()-cpos;
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if((qtype=="MX" && left==2) || (qtype=="SRV" && left==4)){
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int prio=atoi(words[cpos++].c_str());left--;
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content=words[cpos++];left--;
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content+=" "+words[cpos++];
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if(content[content.size()-1]!='.')
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content+="."+d_origin;
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fillRec(qname, qtype, content, ttl, prio,rec);
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content=words[cpos++];left--;
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content+=" "+words[cpos++];
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if(qtype=="MX" || qtype=="CNAME" || qtype=="NS") {
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if(content[content.size()-1]!='.')
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content+="."+d_origin;
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if(qtype=="TXT" && content.size() > 2) { // strip quotes from TXT
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content=content.substr(1);
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if(content[content.size()-1]=='"')
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content.resize(content.size()-1);
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fillRec(qname, qtype, content,ttl, 0, rec);
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throw AhuException("No content on line "+itoa(d_lineno));
added
removed
pdns/backends/bind/zoneparser2.cc
