Obsoleted by downloader.c

src/core/download.c

@@ -1,176 +0,0 @@
-/*
- * 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.
- */
-
-/**
- * @file
- *
- * Download protocols
- *
- */
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <gpxe/umalloc.h>
-#include <gpxe/ebuffer.h>
-#include <gpxe/download.h>
-
-static struct async_operations download_async_operations;
-
-/** Registered download protocols */
-static struct download_protocol download_protocols[0]
-	__table_start ( struct download_protocol, download_protocols );
-static struct download_protocol download_protocols_end[0]
-	__table_end ( struct download_protocol, download_protocols );
-
-/**
- * Identify download protocol
- *
- * @v name		Download protocol name
- * @ret protocol	Download protocol, or NULL
- */
-static struct download_protocol * find_protocol ( const char *name ) {
-	struct download_protocol *protocol;
-
-	for ( protocol = download_protocols; protocol < download_protocols_end;
-	      protocol++ ) {
-		if ( strcmp ( name, protocol->name ) == 0 )
-			return protocol;
-	}
-	return NULL;
-}
-
-/**
- * Start download
- *
- * @v uri_string	URI as a string (e.g. "http://www.nowhere.com/vmlinuz")
- * @v parent		Parent asynchronous operation
- * @ret data		Loaded file
- * @ret len		Length of loaded file
- * @ret rc		Return status code
- *
- * Starts download of a file to a user buffer.  The user buffer is
- * allocated with umalloc().  The parent asynchronous operation will
- * be notified via SIGCHLD when the download completes.  If the
- * download completes successfully, the @c data and @c len fields will
- * have been filled in, and the parent takes ownership of the buffer,
- * which must eventually be freed with ufree().
- *
- * The uri_string does not need to remain persistent for the duration
- * of the download; the parent may discard it as soon as
- * start_download returns.
- */
-int start_download ( const char *uri_string, struct async *parent,
-		     userptr_t *data, size_t *len ) {
-	struct download *download;
-	int rc;
-
-	/* Allocate and populate download structure */
-	download = malloc ( sizeof ( *download ) );
-	if ( ! download )
-		return -ENOMEM;
-	memset ( download, 0, sizeof ( *download ) );
-	download->data = data;
-	download->len = len;
-	async_init ( &download->async, &download_async_operations, parent );
-
-	/* Parse the URI */
-	download->uri = parse_uri ( uri_string );
-	if ( ! download->uri ) {
-		rc = -ENOMEM;
-		goto err;
-	}
-
-	/* Allocate an expandable buffer to hold the file */
-	if ( ( rc = ebuffer_alloc ( &download->buffer, 0 ) ) != 0 )
-		goto err;
-
-	/* Identify the download protocol */
-	download->protocol = find_protocol ( download->uri->scheme );
-	if ( ! download->protocol ) {
-		DBG ( "No such protocol \"%s\"\n", download->uri->scheme );
-		rc = -ENOTSUP;
-		goto err;
-	}
-
-	/* Start the actual download */
-	if ( ( rc = download->protocol->start_download ( download->uri,
-			       &download->buffer, &download->async ) ) != 0 ) {
-		DBG ( "Could not start \"%s\" download: %s\n",
-		      download->uri->scheme, strerror ( rc ) );
-		goto err;
-	}
-
-	return 0;
-
- err:
-	async_uninit ( &download->async );
-	ufree ( download->buffer.addr );
-	uri_put ( download->uri );
-	free ( download );
-	return rc;
-}
-
-/**
- * Handle download termination
- *
- * @v async		Download asynchronous operation
- * @v signal		SIGCHLD
- */
-static void download_sigchld ( struct async *async,
-			       enum signal signal __unused ) {
-	struct download *download =
-		container_of ( async, struct download, async );
-	int rc;
-
-	/* Reap child */
-	async_wait ( async, &rc, 1 );
-
-	/* Clean up */
-	if ( rc == 0 ) {
-		/* Transfer ownership of buffer to parent */
-		*(download->data) = download->buffer.addr;
-		*(download->len) = download->buffer.fill;
-	} else {
-		/* Discard the buffer */
-		ufree ( download->buffer.addr );
-	}
-	uri_put ( download->uri );
-	download->uri = NULL;
-
-	/* Terminate ourselves */
-	async_done ( async, rc );
-}
-
-/**
- * Free download resources
- *
- * @v async		Download asynchronous operation
- */
-static void download_reap ( struct async *async ) {
-	free ( container_of ( async, struct download, async ) );
-}
-
-/** Download asynchronous operations */
-static struct async_operations download_async_operations = {
-	.reap = download_reap,
-	.signal = {
-		[SIGCHLD]	= download_sigchld,
-		[SIGUPDATE]	= SIG_IGN,
-	},
-};

src/include/gpxe/download.h

@@ -1,59 +0,0 @@
-#ifndef _GPXE_DOWNLOAD_H
-#define _GPXE_DOWNLOAD_H
-
-/** @file
- *
- * Download protocols
- *
- */
-
-#include <stdint.h>
-#include <gpxe/uaccess.h>
-#include <gpxe/async.h>
-#include <gpxe/buffer.h>
-#include <gpxe/uri.h>
-#include <gpxe/tables.h>
-
-/** A download protocol */
-struct download_protocol {
-	/** Protocol name (e.g. "http") */ 
-	const char *name;
-	/** Start a download via this protocol
-	 *
-	 * @v uri		Uniform Resource Identifier
-	 * @v buffer		Buffer into which to download file
-	 * @v parent		Parent asynchronous operation
-	 * @ret rc		Return status code
-	 *
-	 * The @c uri and @c buffer will remain persistent for the
-	 * duration of the asynchronous operation.
-	 */
-	int ( * start_download ) ( struct uri *uri, struct buffer *buffer,
-				   struct async *parent );
-};
-
-/** Register a download protocol */
-#define __download_protocol __table ( struct download_protocol, \
-				      download_protocols, 01 )
-
-/** A download in progress */
-struct download {
-	/** User buffer allocated for the download */
-	userptr_t *data;
-	/** Size of the download */
-	size_t *len;
-
-	/** URI being downloaded */
-	struct uri *uri;
-	/** Expandable buffer for this download */
-	struct buffer buffer;
-	/** Download protocol */
-	struct download_protocol *protocol;
-	/** Asynchronous operation for this download */
-	struct async async;
-};
-
-extern int start_download ( const char *uri_string, struct async *parent,
-			    userptr_t *data, size_t *len );
-
-#endif /* _GPXE_DOWNLOAD_H */