Changeset 1340 for trunk/pdns/pdns/dnswriter.cc

Timestamp:

02/14/09 16:18:50 (4 years ago)

Author:

ahu

Message:

implement auto-splitting of long TXT entries, inspired by Derrik Pates. Closes ticket 188.

Files:

• trunk/pdns/pdns/dnswriter.cc (modified) (2 diffs)

trunk/pdns/pdns/dnswriter.cc

@@ -4 +4 @@
 #include <boost/tokenizer.hpp>
 #include <boost/algorithm/string.hpp>
+#include <limits.h>
 
 DNSPacketWriter::DNSPacketWriter(vector<uint8_t>& content, const string& qname, uint16_t  qtype, uint16_t qclass, uint8_t opcode)
@@ -149 +150 @@
   else 
     for(; beg!=tok.end(); ++beg){
-      d_record.push_back(beg->length());
-      const uint8_t* ptr=(uint8_t*)(beg->c_str());
-      d_record.insert(d_record.end(), ptr, ptr+beg->length());
+      if(beg->empty()) 
+        d_record.push_back(0);
+      else 
+        for (unsigned int i = 0; i < beg->length(); i += 0xff){
+          d_record.push_back(min(0xffU, beg->length()-i));
+          const uint8_t* ptr=(uint8_t*)(beg->c_str()) + i;
+          d_record.insert(d_record.end(), ptr, ptr+min(0xffU, beg->length()-i));
+        }
     }
 }