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- /*
- * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program 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 any later version.
- *
- * This program 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 program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #include <stdarg.h>
- #include <string.h>
- #include <errno.h>
- #include <gpxe/xfer.h>
- #include <gpxe/uri.h>
- #include <gpxe/socket.h>
- #include <gpxe/open.h>
-
- /** @file
- *
- * Data transfer interface opening
- *
- */
-
- /** Registered URI openers */
- static struct uri_opener uri_openers[0]
- __table_start ( struct uri_opener, uri_openers );
- static struct uri_opener uri_openers_end[0]
- __table_end ( struct uri_opener, uri_openers );
-
- /** Registered socket openers */
- static struct socket_opener socket_openers[0]
- __table_start ( struct socket_opener, socket_openers );
- static struct socket_opener socket_openers_end[0]
- __table_end ( struct socket_opener, socket_openers );
-
- /**
- * Open URI
- *
- * @v xfer Data transfer interface
- * @v uri_string URI string (e.g. "http://etherboot.org/kernel")
- * @ret rc Return status code
- */
- int xfer_open_uri ( struct xfer_interface *xfer, const char *uri_string ) {
- struct uri *uri;
- struct uri_opener *opener;
-
- DBGC ( xfer, "XFER %p opening URI %s\n", xfer, uri_string );
-
- uri = parse_uri ( uri_string );
- if ( ! uri )
- return -ENOMEM;
-
- for ( opener = uri_openers ; opener < uri_openers_end ; opener++ ) {
- if ( strcmp ( uri->scheme, opener->scheme ) == 0 ) {
- return opener->open ( xfer, uri );
- }
- }
-
- DBGC ( xfer, "XFER %p attempted to open unsupported URI scheme "
- "\"%s\"\n", xfer, uri->scheme );
- free_uri ( uri );
- return -ENOTSUP;
- }
-
- /**
- * Open socket
- *
- * @v xfer Data transfer interface
- * @v domain Communication domain (e.g. PF_INET)
- * @v type Communication semantics (e.g. SOCK_STREAM)
- */
- int xfer_open_socket ( struct xfer_interface *xfer,
- int domain, int type, struct sockaddr *sa ) {
- struct socket_opener *opener;
-
- DBGC ( xfer, "XFER %p opening (%s,%s) socket\n", xfer,
- socket_domain_name ( domain ), socket_type_name ( type ) );
-
- for ( opener = socket_openers; opener < socket_openers_end; opener++ ){
- if ( ( opener->domain == domain ) &&
- ( opener->type == type ) ) {
- return opener->open ( xfer, sa );
- }
- }
-
- DBGC ( xfer, "XFER %p attempted to open unsupported socket type "
- "(%s,%s)\n", xfer, socket_domain_name ( domain ),
- socket_type_name ( type ) );
- return -ENOTSUP;
- }
-
- /**
- * Open location
- *
- * @v xfer Data transfer interface
- * @v type Location type
- * @v args Remaining arguments depend upon location type
- * @ret rc Return status code
- */
- int xfer_vopen ( struct xfer_interface *xfer, int type, va_list args ) {
- switch ( type ) {
- case LOCATION_URI: {
- const char *uri_string = va_arg ( args, const char * );
-
- return xfer_open_uri ( xfer, uri_string ); }
- case LOCATION_SOCKET: {
- int domain = va_arg ( args, int );
- int type = va_arg ( args, int );
- struct sockaddr *sa = va_arg ( args, struct sockaddr * );
-
- return xfer_open_socket ( xfer, domain, type, sa ); }
- default:
- DBGC ( xfer, "XFER %p attempted to open unsupported location "
- "type %d\n", xfer, type );
- return -ENOTSUP;
- }
- }
-
- /**
- * Open location
- *
- * @v xfer Data transfer interface
- * @v type Location type
- * @v ... Remaining arguments depend upon location type
- * @ret rc Return status code
- */
- int xfer_open ( struct xfer_interface *xfer, int type, ... ) {
- va_list args;
- int rc;
-
- va_start ( args, type );
- rc = xfer_vopen ( xfer, type, args );
- va_end ( args );
- return rc;
- }
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