Diff: udp/dns/dns.cpp

Revision:

33:714a0345e59b

Parent:

32:679654f2d023

Child:

37:793b39683406

--- a/udp/dns/dns.cpp	Thu Aug 17 14:21:02 2017 +0000
+++ b/udp/dns/dns.cpp	Wed Aug 23 18:02:42 2017 +0000
@@ -41,6 +41,20 @@
         default: LogTimeF("DNS invalid protocol %d\r\n", protocol); return DNS_PROTOCOL_NONE;
     }
 }
+bool DnsHostNamesEquate(char* pA, char* pB)
+{
+    while(true)
+    {
+        char a = *pA++;
+        char b = *pB++;
+        if (a >= 'A' && a <= 'Z') a |= 0x20; //Make lower case
+        if (b >= 'A' && b <= 'Z') b |= 0x20; //Make lower case
+        if (a != b) return false;            //If different then stop and return the fact
+        if (!a) break;                       //No need to check 'b' too as it will necessarily be equal to 'a' at this point.
+    }
+    return true;                             //If we get here the strings must equate.
+}
+
 int DnsMakeFullNameFromName(int protocol, char* p, int size, char* result)
 {
     int i = 0;
@@ -91,7 +105,6 @@
     while (i < size - 1)
     {
         c = *p++;
-        if (c >= 'A' && c <= 'Z') c |= 0x20;               //Make lower case
         if (c == 0)   break;                               //End of the fqdn so stop
         if (c == '.')
         {