[1774] Use uint8_t instead of unsigned char

src/lib/dns/labelsequence.cc

@@ -23,7 +23,7 @@
 namespace isc {
 namespace dns {
 
-const unsigned char*
+const uint8_t*
 LabelSequence::getData(size_t *len) const {
     *len = getDataLength();
     return (&name_.ndata_[name_.offsets_[first_label_]]);
@@ -47,24 +47,22 @@ LabelSequence::getDataLength() const {
 bool
 LabelSequence::equals(const LabelSequence& other, bool case_sensitive) const {
     size_t len, other_len;
-    const unsigned char* data = getData(&len);
-    const unsigned char* other_data = other.getData(&other_len);
+    const uint8_t* data = getData(&len);
+    const uint8_t* other_data = other.getData(&other_len);
 
     if (len != other_len) {
         return (false);
     }
     if (case_sensitive) {
-        return (std::strncmp((const char*) data,
-                             (const char*) other_data,
-                             len) == 0);
+        return (std::memcmp(data, other_data, len) == 0);
     }
 
     // As long as the data was originally validated as (part of) a name,
     // label length must never be a capital ascii character, so we can
     // simply compare them after converting to lower characters.
     for (size_t i = 0; i < len; ++i) {
-        const unsigned char ch = data[i];
-        const unsigned char other_ch = other_data[i];
+        const uint8_t ch = data[i];
+        const uint8_t other_ch = other_data[i];
         if (isc::dns::name::internal::maptolower[ch] !=
             isc::dns::name::internal::maptolower[other_ch]) {
             return (false);
@@ -99,14 +97,14 @@ LabelSequence::isAbsolute() const {
 size_t
 LabelSequence::getHash(bool case_sensitive) const {
     size_t length;
-    const unsigned char* s = getData(&length);
+    const uint8_t* s = getData(&length);
     if (length > 16) {
         length = 16;
     }
 
     size_t hash_val = 0;
     while (length > 0) {
-        const unsigned char c = *s++;
+        const uint8_t c = *s++;
         boost::hash_combine(hash_val, case_sensitive ? c :
                             isc::dns::name::internal::maptolower[c]);
         --length;

src/lib/dns/labelsequence.h

@@ -67,7 +67,7 @@ public:
     /// \param len Pointer to a size_t where the length of the data
     ///        will be stored (in number of octets)
     /// \return Pointer to the wire-format data of this label sequence
-    const unsigned char* getData(size_t* len) const;
+    const uint8_t* getData(size_t* len) const;
 
     /// \brief Return the length of the wire-format data of this LabelSequence
     ///

src/lib/dns/messagerenderer.cc

@@ -100,8 +100,8 @@ struct NameCompare {
         uint16_t item_label_len = 0;
         for (size_t i = 0; i < item.len_; ++i, ++item_pos) {
             item_pos = nextPosition(*buffer_, item_pos, item_label_len);
-            const unsigned char ch1 = (*buffer_)[item_pos];
-            const unsigned char ch2 = name_buf_->readUint8();
+            const uint8_t ch1 = (*buffer_)[item_pos];
+            const uint8_t ch2 = name_buf_->readUint8();
             if (CASE_SENSITIVE) {
                 if (ch1 != ch2) {
                     return (false);
@@ -293,7 +293,7 @@ MessageRenderer::writeName(const Name& name, const bool compress) {
     LabelSequence sequence(name);
     const size_t nlabels = sequence.getLabelCount();
     size_t data_len;
-    const unsigned char* data;
+    const uint8_t* data;
 
     // Find the offset in the offset table whose name gives the longest
     // match against the name to be rendered.

src/lib/dns/tests/labelsequence_unittest.cc

@@ -130,14 +130,14 @@ getDataCheck(const char* expected_data, size_t expected_len,
              const LabelSequence& ls)
 {
     size_t len;
-    const unsigned char* data = ls.getData(&len);
+    const uint8_t* data = ls.getData(&len);
     ASSERT_EQ(expected_len, len) << "Expected data: " << expected_data <<
                                     " name: " << ls.getName().toText();
     EXPECT_EQ(expected_len, ls.getDataLength()) <<
         "Expected data: " << expected_data <<
         " name: " << ls.getName().toText();
     for (size_t i = 0; i < len; ++i) {
-        EXPECT_EQ((const unsigned char) expected_data[i], data[i]) <<
+        EXPECT_EQ(static_cast<const uint8_t>(expected_data[i]), data[i]) <<
           "Difference at pos " << i << ": Expected data: " << expected_data <<
           " name: " << ls.getName().toText();;
     }
@@ -241,7 +241,7 @@ TEST_F(LabelSequenceTest, comparePart) {
 
     // Data comparison
     size_t len;
-    const unsigned char* data = ls1.getData(&len);
+    const uint8_t* data = ls1.getData(&len);
     getDataCheck((const char*) data, len, ls8);
 }