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HTTP/DNS now working fully asynchronously. HTTP/IP addresses and any

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other protocol won't work at the moment.
This commit is contained in:
Michael Brown
2007-01-18 03:39:45 +00:00
parent 0b11733b75
commit dd6d94004f
6 changed files with 72 additions and 164 deletions
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109
src/usr/fetch.c
View File

@@ -1,109 +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
*
* Fetch file as executable/loadable image
*
*/
#include <errno.h>
#include <vsprintf.h>
#include <gpxe/umalloc.h>
#include <gpxe/ebuffer.h>
#include <gpxe/image.h>
#include <gpxe/uri.h>
#include <usr/fetch.h>
#include <byteswap.h>
#include <gpxe/dhcp.h>
#include <gpxe/tftp.h>
#include <gpxe/http.h>
#include <gpxe/ftp.h>
/**
* Fetch file
*
* @v filename Filename to fetch
* @ret data Loaded file
* @ret len Length of loaded file
* @ret rc Return status code
*
* Fetch file to an external buffer allocated with umalloc(). The
* caller is responsible for eventually freeing the buffer with
* ufree().
*/
int fetch ( const char *uri_string, userptr_t *data, size_t *len ) {
struct uri *uri;
struct buffer buffer;
int rc;
/* Parse the URI */
uri = parse_uri ( uri_string );
if ( ! uri ) {
rc = -ENOMEM;
goto err_parse_uri;
}
/* Allocate an expandable buffer to hold the file */
if ( ( rc = ebuffer_alloc ( &buffer, 0 ) ) != 0 ) {
goto err_ebuffer_alloc;
}
#warning "Temporary pseudo-URL parsing code"
/* Retrieve the file */
struct async async;
int ( * download ) ( struct uri *uri, struct buffer *buffer,
struct async *parent );
if ( ! uri->scheme ) {
download = tftp_get;
} else {
if ( strcmp ( uri->scheme, "http" ) == 0 ) {
download = http_get;
} else if ( strcmp ( uri->scheme, "ftp" ) == 0 ) {
download = ftp_get;
} else {
download = tftp_get;
}
}
if ( ( rc = async_block ( &async,
download ( uri, &buffer, &async ) ) ) != 0 )
goto err;
/* Fill in buffer address and length */
*data = buffer.addr;
*len = buffer.fill;
/* Release temporary resources. The ebuffer storage is now
* owned by our caller, so we don't free it.
*/
free_uri ( uri );
return 0;
err:
ufree ( buffer.addr );
err_ebuffer_alloc:
free_uri ( uri );
err_parse_uri:
return rc;
}

13
src/usr/imgmgmt.c
View File

@@ -22,7 +22,7 @@
#include <vsprintf.h>
#include <gpxe/image.h>
#include <gpxe/umalloc.h>
#include <usr/fetch.h>
#include <gpxe/download.h>
#include <usr/imgmgmt.h>
/** @file
@@ -34,14 +34,15 @@
/**
* Fetch an image
*
* @v filename Filename for image
* @v uri_string URI as a string (e.g. "http://www.nowhere.com/vmlinuz")
* @v name Name for image, or NULL
* @ret new_image Newly created image
* @ret rc Return status code
*/
int imgfetch ( const char *filename, const char *name,
int imgfetch ( const char *uri_string, const char *name,
struct image **new_image ) {
struct image *image;
struct async async;
int rc;
/* Allocate new image */
@@ -54,8 +55,10 @@ int imgfetch ( const char *filename, const char *name,
if ( name )
strncpy ( image->name, name, ( sizeof ( image->name ) - 1 ) );
/* Fetch the file */
if ( ( rc = fetch ( filename, &image->data, &image->len ) ) != 0 )
/* Download the file */
if ( ( rc = async_block ( &async, start_download ( uri_string, &async,
&image->data,
&image->len ))) !=0)
goto err;
/* Register the image */