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using DomainPublicSuffix;
namespace KeePassRPC
{
public class URLSummary
{
public string HostnameAndPort;
public string HostnameOnly;
public string Port;
public DomainName Domain;
private URLSummary(string hostnameAndPort, string hostnameOnly, string port, DomainName domain)
{
HostnameAndPort = hostnameAndPort;
HostnameOnly = hostnameOnly;
Port = port;
Domain = domain;
}
public static URLSummary FromURL(string URL)
{
if (URL.StartsWith("data:"))
{
return new URLSummary("", "", "", null);
}
bool isFile = false;
int protocolIndex = URL.IndexOf("://");
string hostAndPort = "";
if (URL.StartsWith("file://"))
{
isFile = true;
// the "host and port" of a file is the actual file name
// (i.e. everything except the query string)
int qsIndex = URL.IndexOf("?");
if (qsIndex > -1)
hostAndPort = URL.Substring(7, qsIndex - 7);
else if (URL.Length > 7)
hostAndPort = URL.Substring(7);
}
else if (protocolIndex > -1)
{
string URLExcludingProt = URL.Substring(protocolIndex + 3);
int pathStart = URLExcludingProt.IndexOf("/", 0);
if (pathStart > -1 && URLExcludingProt.Length > pathStart)
{
hostAndPort = URL.Substring(protocolIndex + 3, pathStart);
}
else if (pathStart == -1) // it's already just a hostname and optional port
{
hostAndPort = URLExcludingProt;
}
}
else
{
// we haven't received a protocol
string URLExcludingProt = URL;
int pathStart = URLExcludingProt.IndexOf("/", 0);
if (pathStart > -1 && URLExcludingProt.Length > pathStart)
{
hostAndPort = URL.Substring(0, pathStart);
}
else if (pathStart == -1) // it's already just a hostname and optional port
{
hostAndPort = URLExcludingProt;
}
}
string hostnameOnly = hostAndPort;
int portIndex = -1;
DomainName domain = null;
if (!isFile)
{
int ipv6Bracket = hostAndPort.LastIndexOf("]");
if (ipv6Bracket == hostAndPort.Length - 1 && ipv6Bracket > 0)
portIndex = -1;
else
portIndex = hostAndPort.LastIndexOf(":");
// Protect against common malformed URL (Windows file path without file protocol)
if (portIndex <= 1)
portIndex = -1;
hostnameOnly = hostAndPort.Substring(0, portIndex > 0 ? portIndex : hostAndPort.Length);
DomainName.TryParse(hostnameOnly, out domain);
if (domain == null || domain.RegistrableDomain == null) domain = null;
}
return new URLSummary(hostAndPort,
hostnameOnly,
portIndex > 0 && portIndex+1 < hostAndPort.Length ? hostAndPort.Substring(portIndex+1) : "",
domain);
}
}
}
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