gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 597 deletions

diff --git a/gpxe/src/net/tcp/http.c b/gpxe/src/net/tcp/http.c
deleted file mode 100644
index a365b2a4..00000000
--- a/gpxe/src/net/tcp/http.c
+++ /dev/null
@@ -1,597 +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_LICENCE ( GPL2_OR_LATER );
-
-/**
- * @file
- *
- * Hyper Text Transfer Protocol (HTTP)
- *
- */
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <strings.h>
-#include <byteswap.h>
-#include <errno.h>
-#include <assert.h>
-#include <gpxe/uri.h>
-#include <gpxe/refcnt.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/xfer.h>
-#include <gpxe/open.h>
-#include <gpxe/socket.h>
-#include <gpxe/tcpip.h>
-#include <gpxe/process.h>
-#include <gpxe/linebuf.h>
-#include <gpxe/features.h>
-#include <gpxe/base64.h>
-#include <gpxe/http.h>
-
-FEATURE ( FEATURE_PROTOCOL, "HTTP", DHCP_EB_FEATURE_HTTP, 1 );
-
-/** HTTP receive state */
-enum http_rx_state {
-	HTTP_RX_RESPONSE = 0,
-	HTTP_RX_HEADER,
-	HTTP_RX_DATA,
-	HTTP_RX_DEAD,
-};
-
-/**
- * An HTTP request
- *
- */
-struct http_request {
-	/** Reference count */
-	struct refcnt refcnt;
-	/** Data transfer interface */
-	struct xfer_interface xfer;
-
-	/** URI being fetched */
-	struct uri *uri;
-	/** Transport layer interface */
-	struct xfer_interface socket;
-
-	/** TX process */
-	struct process process;
-
-	/** HTTP response code */
-	unsigned int response;
-	/** HTTP Content-Length */
-	size_t content_length;
-	/** Received length */
-	size_t rx_len;
-	/** RX state */
-	enum http_rx_state rx_state;
-	/** Line buffer for received header lines */
-	struct line_buffer linebuf;
-};
-
-/**
- * Free HTTP request
- *
- * @v refcnt		Reference counter
- */
-static void http_free ( struct refcnt *refcnt ) {
-	struct http_request *http =
-		container_of ( refcnt, struct http_request, refcnt );
-
-	uri_put ( http->uri );
-	empty_line_buffer ( &http->linebuf );
-	free ( http );
-};
-
-/**
- * Mark HTTP request as complete
- *
- * @v http		HTTP request
- * @v rc		Return status code
- */
-static void http_done ( struct http_request *http, int rc ) {
-
-	/* Prevent further processing of any current packet */
-	http->rx_state = HTTP_RX_DEAD;
-
-	/* If we had a Content-Length, and the received content length
-	 * isn't correct, flag an error
-	 */
-	if ( http->content_length &&
-	     ( http->content_length != http->rx_len ) ) {
-		DBGC ( http, "HTTP %p incorrect length %zd, should be %zd\n",
-		       http, http->rx_len, http->content_length );
-		rc = -EIO;
-	}
-
-	/* Remove process */
-	process_del ( &http->process );
-
-	/* Close all data transfer interfaces */
-	xfer_nullify ( &http->socket );
-	xfer_close ( &http->socket, rc );
-	xfer_nullify ( &http->xfer );
-	xfer_close ( &http->xfer, rc );
-}
-
-/**
- * Convert HTTP response code to return status code
- *
- * @v response		HTTP response code
- * @ret rc		Return status code
- */
-static int http_response_to_rc ( unsigned int response ) {
-	switch ( response ) {
-	case 200:
-	case 301:
-	case 302:
-		return 0;
-	case 404:
-		return -ENOENT;
-	case 403:
-		return -EPERM;
-	case 401:
-		return -EACCES;
-	default:
-		return -EIO;
-	}
-}
-
-/**
- * Handle HTTP response
- *
- * @v http		HTTP request
- * @v response		HTTP response
- * @ret rc		Return status code
- */
-static int http_rx_response ( struct http_request *http, char *response ) {
-	char *spc;
-	int rc;
-
-	DBGC ( http, "HTTP %p response \"%s\"\n", http, response );
-
-	/* Check response starts with "HTTP/" */
-	if ( strncmp ( response, "HTTP/", 5 ) != 0 )
-		return -EIO;
-
-	/* Locate and check response code */
-	spc = strchr ( response, ' ' );
-	if ( ! spc )
-		return -EIO;
-	http->response = strtoul ( spc, NULL, 10 );
-	if ( ( rc = http_response_to_rc ( http->response ) ) != 0 )
-		return rc;
-
-	/* Move to received headers */
-	http->rx_state = HTTP_RX_HEADER;
-	return 0;
-}
-
-/**
- * Handle HTTP Location header
- *
- * @v http		HTTP request
- * @v value		HTTP header value
- * @ret rc		Return status code
- */
-static int http_rx_location ( struct http_request *http, const char *value ) {
-	int rc;
-
-	/* Redirect to new location */
-	DBGC ( http, "HTTP %p redirecting to %s\n", http, value );
-	if ( ( rc = xfer_redirect ( &http->xfer, LOCATION_URI_STRING,
-				    value ) ) != 0 ) {
-		DBGC ( http, "HTTP %p could not redirect: %s\n",
-		       http, strerror ( rc ) );
-		return rc;
-	}
-
-	return 0;
-}
-
-/**
- * Handle HTTP Content-Length header
- *
- * @v http		HTTP request
- * @v value		HTTP header value
- * @ret rc		Return status code
- */
-static int http_rx_content_length ( struct http_request *http,
-				    const char *value ) {
-	char *endp;
-
-	http->content_length = strtoul ( value, &endp, 10 );
-	if ( *endp != '\0' ) {
-		DBGC ( http, "HTTP %p invalid Content-Length \"%s\"\n",
-		       http, value );
-		return -EIO;
-	}
-
-	/* Use seek() to notify recipient of filesize */
-	xfer_seek ( &http->xfer, http->content_length, SEEK_SET );
-	xfer_seek ( &http->xfer, 0, SEEK_SET );
-
-	return 0;
-}
-
-/** An HTTP header handler */
-struct http_header_handler {
-	/** Name (e.g. "Content-Length") */
-	const char *header;
-	/** Handle received header
-	 *
-	 * @v http	HTTP request
-	 * @v value	HTTP header value
-	 * @ret rc	Return status code
-	 *
-	 * If an error is returned, the download will be aborted.
-	 */
-	int ( * rx ) ( struct http_request *http, const char *value );
-};
-
-/** List of HTTP header handlers */
-static struct http_header_handler http_header_handlers[] = {
-	{
-		.header = "Location",
-		.rx = http_rx_location,
-	},
-	{
-		.header = "Content-Length",
-		.rx = http_rx_content_length,
-	},
-	{ NULL, NULL }
-};
-
-/**
- * Handle HTTP header
- *
- * @v http		HTTP request
- * @v header		HTTP header
- * @ret rc		Return status code
- */
-static int http_rx_header ( struct http_request *http, char *header ) {
-	struct http_header_handler *handler;
-	char *separator;
-	char *value;
-	int rc;
-
-	/* An empty header line marks the transition to the data phase */
-	if ( ! header[0] ) {
-		DBGC ( http, "HTTP %p start of data\n", http );
-		empty_line_buffer ( &http->linebuf );
-		http->rx_state = HTTP_RX_DATA;
-		return 0;
-	}
-
-	DBGC ( http, "HTTP %p header \"%s\"\n", http, header );
-
-	/* Split header at the ": " */
-	separator = strstr ( header, ": " );
-	if ( ! separator ) {
-		DBGC ( http, "HTTP %p malformed header\n", http );
-		return -EIO;
-	}
-	*separator = '\0';
-	value = ( separator + 2 );
-
-	/* Hand off to header handler, if one exists */
-	for ( handler = http_header_handlers ; handler->header ; handler++ ) {
-		if ( strcasecmp ( header, handler->header ) == 0 ) {
-			if ( ( rc = handler->rx ( http, value ) ) != 0 )
-				return rc;
-			break;
-		}
-	}
-	return 0;
-}
-
-/** An HTTP line-based data handler */
-struct http_line_handler {
-	/** Handle line
-	 *
-	 * @v http	HTTP request
-	 * @v line	Line to handle
-	 * @ret rc	Return status code
-	 */
-	int ( * rx ) ( struct http_request *http, char *line );
-};
-
-/** List of HTTP line-based data handlers */
-static struct http_line_handler http_line_handlers[] = {
-	[HTTP_RX_RESPONSE]	= { .rx = http_rx_response },
-	[HTTP_RX_HEADER]	= { .rx = http_rx_header },
-};
-
-/**
- * Handle new data arriving via HTTP connection in the data phase
- *
- * @v http		HTTP request
- * @v iobuf		I/O buffer
- * @ret rc		Return status code
- */
-static int http_rx_data ( struct http_request *http,
-			  struct io_buffer *iobuf ) {
-	int rc;
-
-	/* Update received length */
-	http->rx_len += iob_len ( iobuf );
-
-	/* Hand off data buffer */
-	if ( ( rc = xfer_deliver_iob ( &http->xfer, iobuf ) ) != 0 )
-		return rc;
-
-	/* If we have reached the content-length, stop now */
-	if ( http->content_length &&
-	     ( http->rx_len >= http->content_length ) ) {
-		http_done ( http, 0 );
-	}
-
-	return 0;
-}
-
-/**
- * Handle new data arriving via HTTP connection
- *
- * @v socket		Transport layer interface
- * @v iobuf		I/O buffer
- * @v meta		Data transfer metadata
- * @ret rc		Return status code
- */
-static int http_socket_deliver_iob ( struct xfer_interface *socket,
-				     struct io_buffer *iobuf,
-				     struct xfer_metadata *meta __unused ) {
-	struct http_request *http =
-		container_of ( socket, struct http_request, socket );
-	struct http_line_handler *lh;
-	char *line;
-	ssize_t len;
-	int rc = 0;
-
-	while ( iob_len ( iobuf ) ) {
-		switch ( http->rx_state ) {
-		case HTTP_RX_DEAD:
-			/* Do no further processing */
-			goto done;
-		case HTTP_RX_DATA:
-			/* Once we're into the data phase, just fill
-			 * the data buffer
-			 */
-			rc = http_rx_data ( http, iob_disown ( iobuf ) );
-			goto done;
-		case HTTP_RX_RESPONSE:
-		case HTTP_RX_HEADER:
-			/* In the other phases, buffer and process a
-			 * line at a time
-			 */
-			len = line_buffer ( &http->linebuf, iobuf->data,
-					    iob_len ( iobuf ) );
-			if ( len < 0 ) {
-				rc = len;
-				DBGC ( http, "HTTP %p could not buffer line: "
-				       "%s\n", http, strerror ( rc ) );
-				goto done;
-			}
-			iob_pull ( iobuf, len );
-			line = buffered_line ( &http->linebuf );
-			if ( line ) {
-				lh = &http_line_handlers[http->rx_state];
-				if ( ( rc = lh->rx ( http, line ) ) != 0 )
-					goto done;
-			}
-			break;
-		default:
-			assert ( 0 );
-			break;
-		}
-	}
-
- done:
-	if ( rc )
-		http_done ( http, rc );
-	free_iob ( iobuf );
-	return rc;
-}
-
-/**
- * HTTP process
- *
- * @v process		Process
- */
-static void http_step ( struct process *process ) {
-	struct http_request *http =
-		container_of ( process, struct http_request, process );
-	const char *host = http->uri->host;
-	const char *user = http->uri->user;
-	const char *password =
-		( http->uri->password ? http->uri->password : "" );
-	size_t user_pw_len = ( user ? ( strlen ( user ) + 1 /* ":" */ +
-					strlen ( password ) ) : 0 );
-	size_t user_pw_base64_len = base64_encoded_len ( user_pw_len );
-	char user_pw[ user_pw_len + 1 /* NUL */ ];
-	char user_pw_base64[ user_pw_base64_len + 1 /* NUL */ ];
-	int rc;
-	int request_len = unparse_uri ( NULL, 0, http->uri,
-					URI_PATH_BIT | URI_QUERY_BIT );
-
-	if ( xfer_window ( &http->socket ) ) {
-		char request[request_len + 1];
-
-		/* Construct path?query request */
-		unparse_uri ( request, sizeof ( request ), http->uri,
-			      URI_PATH_BIT | URI_QUERY_BIT );
-
-		/* We want to execute only once */
-		process_del ( &http->process );
-
-		/* Construct authorisation, if applicable */
-		if ( user ) {
-			/* Make "user:password" string from decoded fields */
-			snprintf ( user_pw, sizeof ( user_pw ), "%s:%s",
-				   user, password );
-
-			/* Base64-encode the "user:password" string */
-			base64_encode ( user_pw, user_pw_base64 );
-		}
-
-		/* Send GET request */
-		if ( ( rc = xfer_printf ( &http->socket,
-					  "GET %s%s HTTP/1.0\r\n"
-					  "User-Agent: gPXE/" VERSION "\r\n"
-					  "%s%s%s"
-					  "Host: %s\r\n"
-					  "\r\n",
-					  http->uri->path ? "" : "/",
-					  request,
-					  ( user ?
-					    "Authorization: Basic " : "" ),
-					  ( user ? user_pw_base64 : "" ),
-					  ( user ? "\r\n" : "" ),
-					  host ) ) != 0 ) {
-			http_done ( http, rc );
-		}
-	}
-}
-
-/**
- * HTTP connection closed by network stack
- *
- * @v socket		Transport layer interface
- * @v rc		Reason for close
- */
-static void http_socket_close ( struct xfer_interface *socket, int rc ) {
-	struct http_request *http =
-		container_of ( socket, struct http_request, socket );
-
-	DBGC ( http, "HTTP %p socket closed: %s\n",
-	       http, strerror ( rc ) );
-	
-	http_done ( http, rc );
-}
-
-/** HTTP socket operations */
-static struct xfer_interface_operations http_socket_operations = {
-	.close		= http_socket_close,
-	.vredirect	= xfer_vreopen,
-	.window		= unlimited_xfer_window,
-	.alloc_iob	= default_xfer_alloc_iob,
-	.deliver_iob	= http_socket_deliver_iob,
-	.deliver_raw	= xfer_deliver_as_iob,
-};
-
-/**
- * Close HTTP data transfer interface
- *
- * @v xfer		Data transfer interface
- * @v rc		Reason for close
- */
-static void http_xfer_close ( struct xfer_interface *xfer, int rc ) {
-	struct http_request *http =
-		container_of ( xfer, struct http_request, xfer );
-
-	DBGC ( http, "HTTP %p interface closed: %s\n",
-	       http, strerror ( rc ) );
-
-	http_done ( http, rc );
-}
-
-/** HTTP data transfer interface operations */
-static struct xfer_interface_operations http_xfer_operations = {
-	.close		= http_xfer_close,
-	.vredirect	= ignore_xfer_vredirect,
-	.window		= unlimited_xfer_window,
-	.alloc_iob	= default_xfer_alloc_iob,
-	.deliver_iob	= xfer_deliver_as_raw,
-	.deliver_raw	= ignore_xfer_deliver_raw,
-};
-
-/**
- * Initiate an HTTP connection, with optional filter
- *
- * @v xfer		Data transfer interface
- * @v uri		Uniform Resource Identifier
- * @v default_port	Default port number
- * @v filter		Filter to apply to socket, or NULL
- * @ret rc		Return status code
- */
-int http_open_filter ( struct xfer_interface *xfer, struct uri *uri,
-		       unsigned int default_port,
-		       int ( * filter ) ( struct xfer_interface *xfer,
-					  struct xfer_interface **next ) ) {
-	struct http_request *http;
-	struct sockaddr_tcpip server;
-	struct xfer_interface *socket;
-	int rc;
-
-	/* Sanity checks */
-	if ( ! uri->host )
-		return -EINVAL;
-
-	/* Allocate and populate HTTP structure */
-	http = zalloc ( sizeof ( *http ) );
-	if ( ! http )
-		return -ENOMEM;
-	http->refcnt.free = http_free;
-	xfer_init ( &http->xfer, &http_xfer_operations, &http->refcnt );
-       	http->uri = uri_get ( uri );
-	xfer_init ( &http->socket, &http_socket_operations, &http->refcnt );
-	process_init ( &http->process, http_step, &http->refcnt );
-
-	/* Open socket */
-	memset ( &server, 0, sizeof ( server ) );
-	server.st_port = htons ( uri_port ( http->uri, default_port ) );
-	socket = &http->socket;
-	if ( filter ) {
-		if ( ( rc = filter ( socket, &socket ) ) != 0 )
-			goto err;
-	}
-	if ( ( rc = xfer_open_named_socket ( socket, SOCK_STREAM,
-					     ( struct sockaddr * ) &server,
-					     uri->host, NULL ) ) != 0 )
-		goto err;
-
-	/* Attach to parent interface, mortalise self, and return */
-	xfer_plug_plug ( &http->xfer, xfer );
-	ref_put ( &http->refcnt );
-	return 0;
-
- err:
-	DBGC ( http, "HTTP %p could not create request: %s\n", 
-	       http, strerror ( rc ) );
-	http_done ( http, rc );
-	ref_put ( &http->refcnt );
-	return rc;
-}
-
-/**
- * Initiate an HTTP connection
- *
- * @v xfer		Data transfer interface
- * @v uri		Uniform Resource Identifier
- * @ret rc		Return status code
- */
-static int http_open ( struct xfer_interface *xfer, struct uri *uri ) {
-	return http_open_filter ( xfer, uri, HTTP_PORT, NULL );
-}
-
-/** HTTP URI opener */
-struct uri_opener http_uri_opener __uri_opener = {
-	.scheme	= "http",
-	.open	= http_open,
-};