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/* Copyright (c) 2001, Stanford University
* All rights reserved
*
* See the file LICENSE.txt for information on redistributing this software.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "cr_string.h"
#include "cr_url.h"
#include "cr_error.h"
static int is_digit_string( const char *s )
{
if (!isdigit( (int) *s))
{
return 0;
}
while (*s && isdigit ( (int) *s))
{
s++;
}
return ( *s == 0 );
}
int crParseURL( const char *url, char *protocol, char *hostname,
unsigned short *port, unsigned short default_port )
{
const char *temp, *temp2;
/* pull off the protocol */
temp = crStrstr( url, "://" );
if ( temp == NULL && protocol != NULL )
{
crStrcpy( protocol, "tcpip" );
temp = url;
}
else
{
if (protocol != NULL) {
int len = temp - url;
crStrncpy( protocol, url, len );
protocol[len] = 0;
}
temp += 3;
}
/* handle a trailing :<digits> to specify the port */
/* there might be a filename here */
temp2 = crStrrchr( temp, '/' );
if ( temp2 == NULL )
{
temp2 = crStrrchr( temp, '\\' );
}
if ( temp2 == NULL )
{
temp2 = temp;
}
temp2 = crStrrchr( temp2, ':' );
if ( temp2 )
{
if (hostname != NULL) {
int len = temp2 - temp;
crStrncpy( hostname, temp, len );
hostname[len] = 0;
}
temp2++;
if ( !is_digit_string( temp2 ) )
goto bad_url;
if (port != NULL)
*port = (unsigned short) atoi( temp2 );
}
else
{
if (hostname != NULL)
crStrcpy( hostname, temp );
if (port != NULL)
*port = default_port;
}
return 1;
bad_url:
crWarning( "URL: expected <protocol>://"
"<destination>[:<port>], what is \"%s\"?", url );
return 0;
}
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