On 28/07/16 10:14, Koenraad Lelong wrote:
I need a way to test if an string containing an ipv4-address is really
an ipv4-address.
I tried
tmpAddress:=HostAddrToStr(StrToHostAddr(IPAddressStr));
writeln(tmpAddress);
if (tmpAddress='0.0.0.0') then
begin
writeln('Error in IP-address');
IPAddressStr:=tmpAddress;
end;
When I enter 192.168.185.297 (i.e. not a valid ipv4 address) in
IPAddressStr I get
192.168.185.41
not the expected error-message.
You can add a multiple of 256 to any octet of an IPv4 address in most
programs. Try it in your browser, it will probably also work.
Jonas
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