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/************************************************************************/
/* */
/* Retrieve fields from URL's */
/* */
/* Implements part of rfc 1738. */
/* */
/************************************************************************/
# include "appUtilConfig.h"
# include <string.h>
# include <appUrl.h>
# include <appDebugon.h>
/************************************************************************/
/* */
/* Extract the scheme part from a URL. */
/* */
/* Of failure return -1. Otherwise return the number of characters */
/* consumed including the colon such that url+ rval ponts to the */
/* scheme specific part. */
/* */
/************************************************************************/
int appUrlGetScheme( char * scheme,
int schemeLen,
const char * url )
{
const char * s= url;
int used;
int made;
used= made= 0;
for (;;)
{
if ( made >= schemeLen )
{ return -1; }
if ( *s >= 'A' && *s <= 'Z' )
{ *(scheme++)= *(s++)- 'A'+ 'a'; used++; made++; continue; }
if ( ( *s >= 'a' && *s <= 'z' ) ||
*s == '+' ||
*s == '-' ||
*s == '.' )
{ *(scheme++)= *(s++); used++; made++; continue; }
if ( *s == ':' )
{ *(scheme++)= '\0'; used++; break; }
return -1;
}
return used;
}
/************************************************************************/
/* */
/* Extract the host part from a URL. */
/* */
/************************************************************************/
static int appUrlGetHost( int * pMade,
char * host,
int hostLen,
const char * s,
int xterm )
{
int used;
int made;
used= made= 0;
for (;;)
{
if ( made >= hostLen )
{ LLDEB(made,hostLen); return -1; }
if ( *s >= 'A' && *s <= 'Z' )
{ *(host++)= *(s++)- 'A'+ 'a'; used++; made++; continue; }
if ( ( *s >= 'a' && *s <= 'z' ) ||
( *s >= '0' && *s <= '9' ) ||
*s == '+' ||
*s == '-' ||
*s == '.' )
{ *(host++)= *(s++); used++; made++; continue; }
if ( *s == xterm || *s == '\0' || *s == '/' )
{ *(host++)= '\0'; break; }
SDEB(s); return -1;
}
*pMade += made; return used;
}
/************************************************************************/
/* */
/* Extract the host/port combination from a HTTP URL. */
/* */
/* Return the number of characters consumed, including the terminating */
/* slash, such that schemeSpecific+ used points to the end of the */
/* string or to the hpath?search part. */
/* */
/************************************************************************/
int appUrlGetHttpHostPort( char * host,
int hostLen,
char * port,
int portLen,
const char * schemeSpecific )
{
const char * s= schemeSpecific;
int used;
int made;
int done;
if ( s[0] != '/' || s[1] != '/' )
{ SDEB(s); return -1; }
s += 2; used= 2;
made= 0;
done= appUrlGetHost( &made, host, hostLen, s, ':' );
if ( done < 0 )
{ LDEB(done); return -1; }
s += done; used += done;
if ( *s == ':' )
{
s++; used++;
made= 0;
for (;;)
{
if ( made >= hostLen )
{ LLDEB(made,hostLen); return -1; }
if ( *s >= '0' && *s <= '9' )
{ *(port++)= *(s++); used++; made++; continue; }
if ( *s == '\0' || *s == '/' )
{ *(port++)= '\0'; break; }
SDEB(s); return -1;
}
}
else{ strcpy( port, "80" ); }
/*
if ( *s == '/' )
{ s++; used++; }
*/
return used;
}
/************************************************************************/
/* */
/* Extract the host part from a FILE URL. */
/* */
/* Return the number of characters consumed, excluding the terminating */
/* slash, such that schemeSpecific+ used points to the end of the */
/* string or to the path part. */
/* */
/************************************************************************/
int appUrlGetFileHost( char * host,
int hostLen,
const char * schemeSpecific )
{
const char * s= schemeSpecific;
int used;
int made;
int done;
if ( s[0] != '/' || s[1] != '/' )
{ SDEB(s); return -1; }
s += 2; used= 2;
made= 0;
done= appUrlGetHost( &made, host, hostLen, s, '/' );
if ( done < 0 )
{ LDEB(done); return -1; }
s += done; used += done;
return used;
}
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