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[uri] Allow URIs to incorporate a parameter list

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HTTP POST requires the ability to associate a parameter list with a
URI.  There is no standardised syntax for this.  Use a non-standard
URI syntax to incorporate the specification of a parameter list within
a URI:

  URI = [ absoluteURI | relativeURI ]
	[ "#" fragment ] [ "##params" [ "=" paramsName ] ]

e.g.

  http://boot.ipxe.org/demo/boot.php##params
  http://boot.ipxe.org/demo/boot.php##params=mylist

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2013-08-14 15:07:52 +01:00
parent 430c3fb900
commit e52380fa3b
2 changed files with 34 additions and 1 deletions
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31
src/core/uri.c
View File

@ -31,6 +31,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <libgen.h>
#include <ctype.h>
#include <ipxe/vsprintf.h>
#include <ipxe/params.h>
#include <ipxe/uri.h>
/**
@ -59,6 +60,21 @@ static void dump_uri ( struct uri *uri ) {
DBG ( " query \"%s\"", uri->query );
if ( uri->fragment )
DBG ( " fragment \"%s\"", uri->fragment );
if ( uri->params )
DBG ( " params \"%s\"", uri->params->name );
}
/**
* Free URI
*
* @v refcnt Reference count
*/
static void free_uri ( struct refcnt *refcnt ) {
struct uri *uri = container_of ( refcnt, struct uri, refcnt );
if ( uri->params )
destroy_parameters ( uri->params );
free ( uri );
}
/**
@ -85,12 +101,25 @@ struct uri * parse_uri ( const char *uri_string ) {
uri = zalloc ( sizeof ( *uri ) + raw_len );
if ( ! uri )
return NULL;
ref_init ( &uri->refcnt, free_uri );
raw = ( ( ( char * ) uri ) + sizeof ( *uri ) );
/* Copy in the raw string */
memcpy ( raw, uri_string, raw_len );
/* Start by chopping off the fragment, if it exists */
/* Identify the parameter list, if present */
if ( ( tmp = strstr ( raw, "##params" ) ) ) {
*tmp = '\0';
tmp += 8 /* "##params" */;
uri->params = find_parameters ( *tmp ? ( tmp + 1 ) : NULL );
if ( uri->params ) {
claim_parameters ( uri->params );
} else {
/* Ignore non-existent submission blocks */
}
}
/* Chop off the fragment, if it exists */
if ( ( tmp = strchr ( raw, '#' ) ) ) {
*(tmp++) = '\0';
uri->fragment = tmp;

4
src/include/ipxe/uri.h
View File

@ -13,6 +13,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <stdlib.h>
#include <ipxe/refcnt.h>
struct parameters;
/** A Uniform Resource Identifier
*
* Terminology for this data structure is as per uri(7), except that
@ -65,6 +67,8 @@ struct uri {
const char *query;
/** Fragment */
const char *fragment;
/** Form parameters */
struct parameters *params;
} __attribute__ (( packed ));
/** A field in a URI