1 files changed, 228 insertions, 0 deletions
diff --git a/roms/ipxe/src/core/open.c b/roms/ipxe/src/core/open.c
new file mode 100644
index 00000000..b479c297
--- /dev/null
+++ b/roms/ipxe/src/core/open.c
@@ -0,0 +1,228 @@
+/*
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <ipxe/xfer.h>
+#include <ipxe/uri.h>
+#include <ipxe/socket.h>
+#include <ipxe/open.h>
+
+/** @file
+ *
+ * Data transfer interface opening
+ *
+ */
+
+/**
+ * Find opener for URI scheme
+ *
+ * @v scheme		URI scheme
+ * @ret opener		Opener, or NULL
+ */
+struct uri_opener * xfer_uri_opener ( const char *scheme ) {
+	struct uri_opener *opener;
+
+	for_each_table_entry ( opener, URI_OPENERS ) {
+		if ( strcmp ( scheme, opener->scheme ) == 0 )
+			return opener;
+	}
+	return NULL;
+}
+
+/**
+ * Open URI
+ *
+ * @v intf		Data transfer interface
+ * @v uri		URI
+ * @ret rc		Return status code
+ *
+ * The URI will be regarded as being relative to the current working
+ * URI (see churi()).
+ */
+int xfer_open_uri ( struct interface *intf, struct uri *uri ) {
+	struct uri_opener *opener;
+	struct uri *resolved_uri;
+	int rc;
+
+	/* Resolve URI */
+	resolved_uri = resolve_uri ( cwuri, uri );
+	if ( ! resolved_uri ) {
+		rc = -ENOMEM;
+		goto err_resolve_uri;
+	}
+
+	/* Find opener which supports this URI scheme */
+	opener = xfer_uri_opener ( resolved_uri->scheme );
+	if ( ! opener ) {
+		DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " attempted to open "
+		       "unsupported URI scheme \"%s\"\n",
+		       INTF_DBG ( intf ), resolved_uri->scheme );
+		rc = -ENOTSUP;
+		goto err_opener;
+	}
+
+	/* Call opener */
+	DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " opening %s URI\n",
+	       INTF_DBG ( intf ), resolved_uri->scheme );
+	if ( ( rc = opener->open ( intf, resolved_uri ) ) != 0 ) {
+		DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " could not open: "
+		       "%s\n", INTF_DBG ( intf ), strerror ( rc ) );
+		goto err_open;
+	}
+
+ err_open:
+ err_opener:
+	uri_put ( resolved_uri );
+ err_resolve_uri:
+	return rc;
+}
+
+/**
+ * Open URI string
+ *
+ * @v intf		Data transfer interface
+ * @v uri_string	URI string (e.g. "http://ipxe.org/kernel")
+ * @ret rc		Return status code
+ *
+ * The URI will be regarded as being relative to the current working
+ * URI (see churi()).
+ */
+int xfer_open_uri_string ( struct interface *intf,
+			   const char *uri_string ) {
+	struct uri *uri;
+	int rc;
+
+	DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " opening URI %s\n",
+	       INTF_DBG ( intf ), uri_string );
+
+	uri = parse_uri ( uri_string );
+	if ( ! uri )
+		return -ENOMEM;
+
+	rc = xfer_open_uri ( intf, uri );
+
+	uri_put ( uri );
+	return rc;
+}
+
+/**
+ * Open socket
+ *
+ * @v intf		Data transfer interface
+ * @v semantics		Communication semantics (e.g. SOCK_STREAM)
+ * @v peer		Peer socket address
+ * @v local		Local socket address, or NULL
+ * @ret rc		Return status code
+ */
+int xfer_open_socket ( struct interface *intf, int semantics,
+		       struct sockaddr *peer, struct sockaddr *local ) {
+	struct socket_opener *opener;
+
+	DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " opening (%s,%s) socket\n",
+	       INTF_DBG ( intf ), socket_semantics_name ( semantics ),
+	       socket_family_name ( peer->sa_family ) );
+
+	for_each_table_entry ( opener, SOCKET_OPENERS ) {
+		if ( ( opener->semantics == semantics ) &&
+		     ( opener->family == peer->sa_family ) ) {
+			return opener->open ( intf, peer, local );
+		}
+	}
+
+	DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " attempted to open "
+	       "unsupported socket type (%s,%s)\n",
+	       INTF_DBG ( intf ), socket_semantics_name ( semantics ),
+	       socket_family_name ( peer->sa_family ) );
+	return -ENOTSUP;
+}
+
+/**
+ * Open location
+ *
+ * @v intf		Data transfer interface
+ * @v type		Location type
+ * @v args		Remaining arguments depend upon location type
+ * @ret rc		Return status code
+ */
+int xfer_vopen ( struct interface *intf, int type, va_list args ) {
+	switch ( type ) {
+	case LOCATION_URI_STRING: {
+		const char *uri_string = va_arg ( args, const char * );
+
+		return xfer_open_uri_string ( intf, uri_string ); }
+	case LOCATION_URI: {
+		struct uri *uri = va_arg ( args, struct uri * );
+
+		return xfer_open_uri ( intf, uri ); }
+	case LOCATION_SOCKET: {
+		int semantics = va_arg ( args, int );
+		struct sockaddr *peer = va_arg ( args, struct sockaddr * );
+		struct sockaddr *local = va_arg ( args, struct sockaddr * );
+
+		return xfer_open_socket ( intf, semantics, peer, local ); }
+	default:
+		DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " attempted to "
+		       "open unsupported location type %d\n",
+		       INTF_DBG ( intf ), type );
+		return -ENOTSUP;
+	}
+}
+
+/**
+ * Open location
+ *
+ * @v intf		Data transfer interface
+ * @v type		Location type
+ * @v ...		Remaining arguments depend upon location type
+ * @ret rc		Return status code
+ */
+int xfer_open ( struct interface *intf, int type, ... ) {
+	va_list args;
+	int rc;
+
+	va_start ( args, type );
+	rc = xfer_vopen ( intf, type, args );
+	va_end ( args );
+	return rc;
+}
+
+/**
+ * Reopen location
+ *
+ * @v intf		Data transfer interface
+ * @v type		Location type
+ * @v args		Remaining arguments depend upon location type
+ * @ret rc		Return status code
+ *
+ * This will close the existing connection and open a new connection
+ * using xfer_vopen().  It is intended to be used as a .vredirect
+ * method handler.
+ */
+int xfer_vreopen ( struct interface *intf, int type, va_list args ) {
+
+	/* Close existing connection */
+	intf_restart ( intf, 0 );
+
+	/* Open new location */
+	return xfer_vopen ( intf, type, args );
+}