[2218] Remove NSEC3CalculateFn in InMemoryZoneFinder

Instead, use the facilities provided by isc::dns::NSEC3Hash and
the TestNSEC3HashCreator in fake_nsec3.cc.

src/lib/datasrc/memory/tests/zone_finder_unittest.cc

@@ -48,48 +48,6 @@ namespace {
 using result::SUCCESS;
 using result::EXIST;
 
-// Proxy accessor for faked NSEC3 mapping for tests.  map isn't a trivial
-// type, so it's safer to get access to it via a proxy to avoid initialization
-// fiasco.
-NSEC3HashMap&
-getNSEC3HashMap() {
-    static NSEC3HashMap nsec3_hash_map;
-    return (nsec3_hash_map);
-}
-
-// A faked NSEC3 hash calculator for convenience. Tests that need to use
-// the faked hashed values should call setFakeNSEC3Calculate() on the
-// MyZoneFinder object at the beginning of the test (at least before
-// adding any NSEC3/NSEC3PARAM RR).
-std::string
-fakeNSEC3Calculate(const Name& name,
-                   const uint16_t,
-                   const uint8_t*,
-                   size_t)
-{
-    const NSEC3HashMap::const_iterator found = getNSEC3HashMap().find(name);
-    if (found != getNSEC3HashMap().end()) {
-        return (found->second);
-    }
-
-    isc_throw(isc::Unexpected,
-              "unexpected name for NSEC3 test: " << name);
-}
-
-class MyZoneFinder : public memory::InMemoryZoneFinder {
-public:
-    MyZoneFinder(const ZoneData& zone_data,
-                 const isc::dns::RRClass& rrclass) :
-         memory::InMemoryZoneFinder(zone_data, rrclass)
-    {
-        buildFakeNSEC3Map(getNSEC3HashMap());
-    }
-
-    void setFakeNSEC3Calculate() {
-        nsec3_calculate_ = fakeNSEC3Calculate;
-    }
-};
-
 /// \brief expensive rrset converter
 ///
 /// converts any specialized rrset (which may not have implemented some
@@ -362,7 +320,7 @@ public:
     // The zone finder to torture by tests
     MemorySegmentTest mem_sgmt_;
     memory::ZoneData* zone_data_;
-    MyZoneFinder zone_finder_;
+    memory::InMemoryZoneFinder zone_finder_;
     isc::datasrc::memory::RdataEncoder encoder_;
 
     // Placeholder for storing RRsets to be checked with rrsetsCheck()
@@ -1465,7 +1423,8 @@ TEST_F(InMemoryZoneFinderTest, cancelWildcardNSEC) {
 
 TEST_F(InMemoryZoneFinderTest, findNSEC3ForBadZone) {
     // Set up the faked hash calculator.
-    zone_finder_.setFakeNSEC3Calculate();
+    const TestNSEC3HashCreator creator;
+    setNSEC3HashCreator(&creator);
 
     // If the zone has nothing about NSEC3 (neither NSEC3 or NSEC3PARAM),
     // findNSEC3() should be rejected.
@@ -1492,7 +1451,7 @@ class InMemoryZoneFinderNSEC3Test : public InMemoryZoneFinderTest {
 public:
     InMemoryZoneFinderNSEC3Test() {
         // Set up the faked hash calculator.
-        zone_finder_.setFakeNSEC3Calculate();
+        setNSEC3HashCreator(&creator_);
 
         // Add a few NSEC3 records:
         // apex (example.org.): hash=0P..
@@ -1512,6 +1471,9 @@ public:
             string(nsec3_common);
         addZoneData(textToRRset(zzz_nsec3_text));
     }
+
+private:
+    const TestNSEC3HashCreator creator_;
 };
 
 TEST_F(InMemoryZoneFinderNSEC3Test, findNSEC3) {

src/lib/datasrc/memory/zone_finder.cc

@@ -22,6 +22,7 @@
 #include <dns/name.h>
 #include <dns/rrset.h>
 #include <dns/rrtype.h>
+#include <dns/nsec3hash.h>
 
 #include <datasrc/logger.h>
 
@@ -652,13 +653,16 @@ InMemoryZoneFinder::findNSEC3(const isc::dns::Name& name, bool recursive) {
     // the deepest label one by one, until we find a name that has a matching
     // NSEC3 hash.
     for (unsigned int labels = qlabels; labels >= olabels; --labels) {
+        const std::vector<uint8_t> salt(nsec3_data->getSaltData(),
+                                        (nsec3_data->getSaltData() +
+                                         nsec3_data->getSaltLen()));
+        const std::auto_ptr<NSEC3Hash> hash
+            (NSEC3Hash::create(nsec3_data->hashalg,
+                               nsec3_data->iterations,
+                               salt));
         const Name& hname = (labels == qlabels ?
                              name : name.split(qlabels - labels, labels));
-        const std::string hlabel =
-            (nsec3_calculate_) (hname,
-                                nsec3_data->iterations,
-                                nsec3_data->getSaltData(),
-                                nsec3_data->getSaltLen());
+        const std::string hlabel = hash->calculate(hname);
 
         LOG_DEBUG(logger, DBG_TRACE_BASIC, DATASRC_MEM_FINDNSEC3_TRYHASH).
             arg(name).arg(labels).arg(hlabel);

src/lib/datasrc/memory/zone_finder.h

@@ -22,7 +22,6 @@
 #include <dns/name.h>
 #include <dns/rrset.h>
 #include <dns/rrtype.h>
-#include <dns/nsec3hash.h>
 
 #include <string>
 
@@ -51,12 +50,6 @@ public:
     const ZoneNode* const found_node;
 };
 
-std::string
-InMemoryZoneFinderNSEC3Calculate(const isc::dns::Name& name,
-                                 const uint16_t iterations,
-                                 const uint8_t* salt,
-                                 size_t salt_len);
-
 /// A derived zone finder class intended to be used with the memory data
 /// source, using ZoneData for its contents.
 class InMemoryZoneFinder : boost::noncopyable, public ZoneFinder {
@@ -75,8 +68,7 @@ public:
     InMemoryZoneFinder(const ZoneData& zone_data,
                        const isc::dns::RRClass& rrclass) :
         zone_data_(zone_data),
-        rrclass_(rrclass),
-        nsec3_calculate_(isc::dns::NSEC3Hash::calculate)
+        rrclass_(rrclass)
     {}
 
     /// \brief Find an RRset in the datasource
@@ -128,13 +120,6 @@ private:
 
     const ZoneData& zone_data_;
     const isc::dns::RRClass& rrclass_;
-
-protected:
-    typedef std::string (NSEC3CalculateFn) (const isc::dns::Name& name,
-                                            const uint16_t iterations,
-                                            const uint8_t* salt,
-                                            size_t salt_len);
-    NSEC3CalculateFn* nsec3_calculate_;
 };
 
 } // namespace memory

src/lib/datasrc/tests/faked_nsec3.cc

@@ -53,7 +53,31 @@ private:
     NSEC3HashMap map_;
 public:
     TestNSEC3Hash() {
-        buildFakeNSEC3Map(map_);
+        // Build pre-defined hash
+        map_[Name("example.org")] = apex_hash;
+        map_[Name("www.example.org")] = "2S9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
+        map_[Name("xxx.example.org")] = "Q09MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
+        map_[Name("yyy.example.org")] = "0A9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
+        map_[Name("x.y.w.example.org")] =
+            "2VPTU5TIMAMQTTGL4LUU9KG21E0AOR3S";
+        map_[Name("y.w.example.org")] = "K8UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
+        map_[Name("w.example.org")] = w_hash;
+        map_[Name("zzz.example.org")] = zzz_hash;
+        map_[Name("smallest.example.org")] =
+            "00000000000000000000000000000000";
+        map_[Name("largest.example.org")] =
+            "UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU";
+
+        // These are used by the findNSEC3Walk test.
+        map_[Name("n0.example.org")] = "00000000000000000000000000000000";
+        map_[Name("n1.example.org")] = "01UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
+        map_[Name("n2.example.org")] = "02UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
+        map_[Name("n3.example.org")] = "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
+        map_[Name("n4.example.org")] = "11111111111111111111111111111111";
+        map_[Name("n5.example.org")] = "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR";
+        map_[Name("n6.example.org")] = "44444444444444444444444444444444";
+        map_[Name("n7.example.org")] = "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN";
+        map_[Name("n8.example.org")] = "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ";
     }
     virtual string calculate(const Name& name) const {
         const NSEC3HashMap::const_iterator found = map_.find(name);
@@ -81,35 +105,10 @@ NSEC3Hash* TestNSEC3HashCreator::create(const rdata::generic::NSEC3&) const {
     return (new TestNSEC3Hash);
 }
 
-void
-buildFakeNSEC3Map(NSEC3HashMap& fmap)
-{
-    // Build pre-defined hash
-    fmap.clear();
-    fmap[Name("example.org")] = apex_hash;
-    fmap[Name("www.example.org")] = "2S9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
-    fmap[Name("xxx.example.org")] = "Q09MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
-    fmap[Name("yyy.example.org")] = "0A9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
-    fmap[Name("x.y.w.example.org")] =
-        "2VPTU5TIMAMQTTGL4LUU9KG21E0AOR3S";
-    fmap[Name("y.w.example.org")] = "K8UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
-    fmap[Name("w.example.org")] = w_hash;
-    fmap[Name("zzz.example.org")] = zzz_hash;
-    fmap[Name("smallest.example.org")] =
-         "00000000000000000000000000000000";
-    fmap[Name("largest.example.org")] =
-         "UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU";
-
-    // These are used by the findNSEC3Walk test.
-    fmap[Name("n0.example.org")] = "00000000000000000000000000000000";
-    fmap[Name("n1.example.org")] = "01UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
-    fmap[Name("n2.example.org")] = "02UDEMVP1J2F7EG6JEBPS17VP3N8I58H";
-    fmap[Name("n3.example.org")] = "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM";
-    fmap[Name("n4.example.org")] = "11111111111111111111111111111111";
-    fmap[Name("n5.example.org")] = "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR";
-    fmap[Name("n6.example.org")] = "44444444444444444444444444444444";
-    fmap[Name("n7.example.org")] = "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN";
-    fmap[Name("n8.example.org")] = "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ";
+NSEC3Hash*
+TestNSEC3HashCreator::create(uint8_t, uint16_t,
+                             const vector<uint8_t>&) const {
+    return (new TestNSEC3Hash);
 }
 
 void

src/lib/datasrc/tests/faked_nsec3.h

@@ -18,11 +18,9 @@
 #include <datasrc/zone.h>
 
 #include <dns/nsec3hash.h>
-#include <dns/name.h>
 
 #include <stdint.h>
 #include <string>
-#include <map>
 
 namespace isc {
 namespace datasrc {
@@ -64,15 +62,11 @@ public:
         const;
     virtual isc::dns::NSEC3Hash* create(const isc::dns::rdata::generic::NSEC3&)
         const;
+    virtual isc::dns::NSEC3Hash* create(uint8_t algorithm, uint16_t iterations,
+					const std::vector<uint8_t>& salt)
+        const;
 };
 
-typedef std::map<isc::dns::Name, std::string> NSEC3HashMap;
-typedef NSEC3HashMap::value_type NSEC3HashPair;
-
-// Build the test map with the fake NSEC3 hashes.
-void
-buildFakeNSEC3Map(NSEC3HashMap& fmap);
-
 // Check the result against expected values. It directly calls EXPECT_ macros
 void
 findNSEC3Check(bool expected_matched, uint8_t expected_labels,

src/lib/datasrc/tests/memory_datasrc_unittest.cc

@@ -357,6 +357,11 @@ public:
     virtual NSEC3Hash* create(const generic::NSEC3&) const {
         return (new TestNSEC3Hash);
     }
+    virtual NSEC3Hash* create(uint8_t, uint16_t,
+                              const vector<uint8_t>&) const {
+    return (new TestNSEC3Hash);
+}
+
 };
 
 /// \brief Test fixture for the InMemoryZoneFinder class