On Mon, 10 Nov 2003, Corey Wallis wrote:
> I'm currently developing a program, in C#, to compile the list and
> remove any duplicate domain names etc. The last piece of the puzzle is
> the sub domain check. Could you please tell me how you implemented this
> in the Squid code.
A is a subdomain of B if the following criterias is fulfilled
B starts with a dot and end of A matches B
or A matches B without the leading dot.
if (B[0] == '.') {
if (strlen(B) <= strlen(A) && strcasecmp(A+strlen(A)-strlen(B), B)==0)
return 1; /* end of A matches B */
else if (strcasecmp(A, B+1) == 0)
return 1; /* A matches B without the dot */
} else if (strcasecmp(A, B) == 0) {
return 1; /* A identical to B */
}
return 0; /* no match. A is not a subdomain of B */
Regards
Henrik
