protected boolean isValidAuthority(String authority) {
if (authority == null) {
return false;
}
Perl5Util authorityMatcher = new Perl5Util();
Perl5Util matchIPV4Pat = new Perl5Util();
if (!authorityMatcher.match(AUTHORITY_PATTERN, authority)) {
return false;
}
boolean ipV4Address = false;
boolean hostname = false;
// check if authority is IP address or hostname
String hostIP = authorityMatcher.group(PARSE_AUTHORITY_HOST_IP);
ipV4Address = matchIPV4Pat.match(IP_V4_DOMAIN_PATTERN, hostIP);
if (ipV4Address) {
// this is an IP address so check components
for (int i = 1; i <= 4; i++) {
String ipSegment = matchIPV4Pat.group(i);
if (ipSegment == null || ipSegment.length() <= 0) {
return false;
}
try {
if (Integer.parseInt(ipSegment) > 255) {
return false;
}
} catch(NumberFormatException e) {
return false;
}
}
} else {
// Domain is hostname name
Perl5Util domainMatcher = new Perl5Util();
hostname = domainMatcher.match(DOMAIN_PATTERN, hostIP);
}
//rightmost hostname will never start with a digit.
if (hostname) {
// LOW-TECH FIX FOR VALIDATOR-202
// TODO: Rewrite to use ArrayList and .add semantics: see VALIDATOR-203
char[] chars = hostIP.toCharArray();
int size = 1;
for(int i=0; i<chars.length; i++) {
if(chars[i] == '.') {
size++;
}
}
String[] domainSegment = new String[size];
boolean match = true;
int segmentCount = 0;
int segmentLength = 0;
Perl5Util atomMatcher = new Perl5Util();
while (match) {
match = atomMatcher.match(ATOM_PATTERN, hostIP);
if (match) {
domainSegment[segmentCount] = atomMatcher.group(1);
segmentLength = domainSegment[segmentCount].length() + 1;
hostIP =
(segmentLength >= hostIP.length())
? ""
: hostIP.substring(segmentLength);
segmentCount++;
}
}
String topLevel = domainSegment[segmentCount - 1];
if (topLevel.length() < 2 || topLevel.length() > 4) {
return false;
}
// First letter of top level must be a alpha
Perl5Util alphaMatcher = new Perl5Util();
if (!alphaMatcher.match(ALPHA_PATTERN, topLevel.substring(0, 1))) {
return false;
}
// Make sure there's a host name preceding the authority.
if (segmentCount < 2) {
return false;
}
}
if (!hostname && !ipV4Address) {
return false;
}
String port = authorityMatcher.group(PARSE_AUTHORITY_PORT);
if (port != null) {
Perl5Util portMatcher = new Perl5Util();
if (!portMatcher.match(PORT_PATTERN, port)) {
return false;
}
}
String extra = authorityMatcher.group(PARSE_AUTHORITY_EXTRA);