forked from pool/grub2
99 lines
3.2 KiB
Diff
99 lines
3.2 KiB
Diff
|
From 8191aae462f8b755972a0a801f4adbdd6ecaa66c Mon Sep 17 00:00:00 2001
|
||
|
|
From: Michael Chang <mchang@suse.com>
|
||
|
|
Date: Thu, 14 Jul 2016 18:45:14 +0800
|
||
|
|
Subject: [PATCH 6/8] bootp: Add processing DHCPACK packet from HTTP Boot
|
||
|
|
|
||
|
|
The vendor class identifier with the string "HTTPClient" is used to denote the
|
||
|
|
packet as responding to HTTP boot request. In DHCP4 config, the filename for
|
||
|
|
HTTP boot is the URL of the boot file while for PXE boot it is the path to the
|
||
|
|
boot file. As a consequence, the next-server becomes obseleted because the HTTP
|
||
|
|
URL already contains the server address for the boot file. For DHCP6 config,
|
||
|
|
there's no difference definition in existing config as dhcp6.bootfile-url can
|
||
|
|
be used to specify URL for both HTTP and PXE boot file.
|
||
|
|
|
||
|
|
This patch adds processing for "HTTPClient" vendor class identifier in DHCPACK
|
||
|
|
packet by treating it as HTTP format, not as the PXE format.
|
||
|
|
|
||
|
|
Signed-off-by: Michael Chang <mchang@suse.com>
|
||
|
|
Signed-off-by: Ken Lin <ken.lin@hpe.com>
|
||
|
|
---
|
||
|
|
grub-core/net/bootp.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++--
|
||
|
|
include/grub/net.h | 1 +
|
||
|
|
2 files changed, 66 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/grub-core/net/bootp.c
|
||
|
|
+++ b/grub-core/net/bootp.c
|
||
|
|
@@ -352,6 +352,53 @@
|
||
|
|
if (!inter)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
+ /* FIXME: Introduce new http flag for better synergy with existing tftp code base */
|
||
|
|
+ if (size > OFFSET_OF (vendor, bp))
|
||
|
|
+ {
|
||
|
|
+ char *cidvar;
|
||
|
|
+ const char *cid;
|
||
|
|
+
|
||
|
|
+ opt = find_dhcp_option (bp, size, GRUB_NET_BOOTP_VENDOR_CLASS_IDENTIFIER, &opt_len);
|
||
|
|
+ if (opt && opt_len)
|
||
|
|
+ grub_env_set_net_property (name, "vendor_class_identifier", (const char *) opt, opt_len);
|
||
|
|
+ cidvar = grub_xasprintf ("net_%s_%s", name, "vendor_class_identifier");
|
||
|
|
+ cid = grub_env_get (cidvar);
|
||
|
|
+ grub_free (cidvar);
|
||
|
|
+
|
||
|
|
+ if (cid && grub_strcmp (cid, "HTTPClient") == 0)
|
||
|
|
+ {
|
||
|
|
+ char *proto, *ip, *pa;
|
||
|
|
+
|
||
|
|
+ /* FIXME: Provide better URL function that returns in place pointers
|
||
|
|
+ * so that we don't have to free them.
|
||
|
|
+ */
|
||
|
|
+ if (!dissect_url (bp->boot_file, &proto, &ip, &pa))
|
||
|
|
+ return inter;
|
||
|
|
+
|
||
|
|
+ if (is_def)
|
||
|
|
+ {
|
||
|
|
+ grub_net_default_server = grub_strdup (ip);
|
||
|
|
+ grub_env_set ("net_default_interface", name);
|
||
|
|
+ grub_env_export ("net_default_interface");
|
||
|
|
+ }
|
||
|
|
+ if (device && !*device)
|
||
|
|
+ {
|
||
|
|
+ *device = grub_xasprintf ("%s,%s", proto, ip);
|
||
|
|
+ grub_print_error ();
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ boot_file = pa;
|
||
|
|
+ boot_file_len = grub_strlen (pa);
|
||
|
|
+
|
||
|
|
+ /* FIXME: Don't use malloc buffer here */
|
||
|
|
+ grub_free (proto);
|
||
|
|
+ grub_free (ip);
|
||
|
|
+
|
||
|
|
+ /* FIXME: NEED TO FREE boot_file */
|
||
|
|
+ goto boot_file;
|
||
|
|
+ }
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
opt = find_dhcp_option (bp, size, GRUB_NET_DHCP_OVERLOAD, &opt_len);
|
||
|
|
if (opt && opt_len == 1)
|
||
|
|
overload = *opt;
|
||
|
|
@@ -428,6 +475,8 @@
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
+boot_file:
|
||
|
|
+
|
||
|
|
if (boot_file)
|
||
|
|
{
|
||
|
|
grub_env_set_net_property (name, "boot_file", boot_file, boot_file_len);
|
||
|
|
--- a/include/grub/net.h
|
||
|
|
+++ b/include/grub/net.h
|
||
|
|
@@ -530,6 +530,7 @@
|
||
|
|
GRUB_NET_DHCP_MESSAGE_TYPE = 53,
|
||
|
|
GRUB_NET_DHCP_SERVER_IDENTIFIER = 54,
|
||
|
|
GRUB_NET_DHCP_PARAMETER_REQUEST_LIST = 55,
|
||
|
|
+ GRUB_NET_BOOTP_VENDOR_CLASS_IDENTIFIER = 60,
|
||
|
|
GRUB_NET_BOOTP_CLIENT_ID = 61,
|
||
|
|
GRUB_NET_DHCP_TFTP_SERVER_NAME = 66,
|
||
|
|
GRUB_NET_DHCP_BOOTFILE_NAME = 67,
|