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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifndef __RFB_HOSTNAME_H__
#define __RFB_HOSTNAME_H__
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <rdr/Exception.h>
#include <rfb/util.h>
namespace rfb {
static bool isAllSpace(const char *string) {
if (string == nullptr)
return false;
while(*string != '\0') {
if (! isspace(*string))
return false;
string++;
}
return true;
}
static inline void getHostAndPort(const char* hi, std::string* host,
int* port, int basePort=5900)
{
const char* hostStart;
const char* hostEnd;
const char* portStart;
if (hi == nullptr)
throw rdr::Exception("NULL host specified");
// Trim leading whitespace
while(isspace(*hi))
hi++;
assert(host);
assert(port);
if (hi[0] == '[') {
hostStart = &hi[1];
hostEnd = strchr(hostStart, ']');
if (hostEnd == nullptr)
throw rdr::Exception("unmatched [ in host");
portStart = hostEnd + 1;
if (isAllSpace(portStart))
portStart = nullptr;
} else {
hostStart = &hi[0];
hostEnd = strrchr(hostStart, ':');
if (hostEnd == nullptr) {
hostEnd = hostStart + strlen(hostStart);
portStart = nullptr;
} else {
if ((hostEnd > hostStart) && (hostEnd[-1] == ':'))
hostEnd--;
portStart = strchr(hostStart, ':');
if (portStart != hostEnd) {
// We found more : in the host. This is probably an IPv6 address
hostEnd = hostStart + strlen(hostStart);
portStart = nullptr;
}
}
}
// Back up past trailing space
while(isspace(*(hostEnd - 1)) && hostEnd > hostStart)
hostEnd--;
if (hostStart == hostEnd)
*host = "localhost";
else
*host = std::string(hostStart, hostEnd - hostStart);
if (portStart == nullptr)
*port = basePort;
else {
char* end;
if (portStart[0] != ':')
throw rdr::Exception("invalid port specified");
if (portStart[1] != ':')
*port = strtol(portStart + 1, &end, 10);
else
*port = strtol(portStart + 2, &end, 10);
if (*end != '\0' && ! isAllSpace(end))
throw rdr::Exception("invalid port specified");
if ((portStart[1] != ':') && (*port < 100))
*port += basePort;
}
}
};
#endif // __RFB_HOSTNAME_H__
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