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108 lines
3.9 KiB
108 lines
3.9 KiB
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
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From: Michael Chang <mchang@suse.com> |
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Date: Wed, 10 Jul 2019 23:58:28 +0200 |
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Subject: [PATCH] bootp: Add processing DHCPACK packet from HTTP Boot |
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The vendor class identifier with the string "HTTPClient" is used to denote the |
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packet as responding to HTTP boot request. In DHCP4 config, the filename for |
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HTTP boot is the URL of the boot file while for PXE boot it is the path to the |
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boot file. As a consequence, the next-server becomes obseleted because the HTTP |
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URL already contains the server address for the boot file. For DHCP6 config, |
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there's no difference definition in existing config as dhcp6.bootfile-url can |
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be used to specify URL for both HTTP and PXE boot file. |
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This patch adds processing for "HTTPClient" vendor class identifier in DHCPACK |
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packet by treating it as HTTP format, not as the PXE format. |
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Signed-off-by: Michael Chang <mchang@suse.com> |
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Signed-off-by: Ken Lin <ken.lin@hpe.com> |
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--- |
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grub-core/net/bootp.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++ |
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include/grub/net.h | 1 + |
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2 files changed, 56 insertions(+) |
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diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c |
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index fe93b80f1cf..8fb8918ae7e 100644 |
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--- a/grub-core/net/bootp.c |
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+++ b/grub-core/net/bootp.c |
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@@ -20,6 +20,7 @@ |
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#include <grub/env.h> |
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#include <grub/i18n.h> |
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#include <grub/command.h> |
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+#include <grub/net.h> |
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#include <grub/net/ip.h> |
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#include <grub/net/netbuff.h> |
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#include <grub/net/udp.h> |
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@@ -500,6 +501,60 @@ grub_net_configure_by_dhcp_ack (const char *name, |
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if (opt && opt_len) |
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grub_env_set_net_property (name, "rootpath", (const char *) opt, opt_len); |
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+ opt = find_dhcp_option (bp, size, GRUB_NET_BOOTP_VENDOR_CLASS_IDENTIFIER, &opt_len); |
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+ if (opt && opt_len) |
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+ { |
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+ grub_env_set_net_property (name, "vendor_class_identifier", (const char *) opt, opt_len); |
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+ if (opt && grub_strcmp (opt, "HTTPClient") == 0) |
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+ { |
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+ char *proto, *ip, *pa; |
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+ |
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+ if (!dissect_url (bp->boot_file, &proto, &ip, &pa)) |
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+ return inter; |
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+ |
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+ grub_env_set_net_property (name, "boot_file", pa, grub_strlen (pa)); |
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+ if (is_def) |
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+ { |
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+ grub_net_default_server = grub_strdup (ip); |
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+ grub_env_set ("net_default_interface", name); |
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+ grub_env_export ("net_default_interface"); |
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+ } |
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+ if (device && !*device) |
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+ { |
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+ *device = grub_xasprintf ("%s,%s", proto, ip); |
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+ grub_print_error (); |
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+ } |
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+ if (path) |
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+ { |
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+ *path = grub_strdup (pa); |
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+ grub_print_error (); |
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+ if (*path) |
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+ { |
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+ char *slash; |
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+ slash = grub_strrchr (*path, '/'); |
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+ if (slash) |
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+ *slash = 0; |
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+ else |
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+ **path = 0; |
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+ } |
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+ } |
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+ grub_net_add_ipv4_local (inter, mask); |
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+ inter->dhcp_ack = grub_malloc (size); |
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+ if (inter->dhcp_ack) |
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+ { |
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+ grub_memcpy (inter->dhcp_ack, bp, size); |
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+ inter->dhcp_acklen = size; |
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+ } |
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+ else |
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+ grub_errno = GRUB_ERR_NONE; |
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+ |
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+ grub_free (proto); |
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+ grub_free (ip); |
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+ grub_free (pa); |
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+ return inter; |
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+ } |
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+ } |
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+ |
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opt = find_dhcp_option (bp, size, GRUB_NET_BOOTP_EXTENSIONS_PATH, &opt_len); |
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if (opt && opt_len) |
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grub_env_set_net_property (name, "extensionspath", (const char *) opt, opt_len); |
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diff --git a/include/grub/net.h b/include/grub/net.h |
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index 543251f7273..42af7de250a 100644 |
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--- a/include/grub/net.h |
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+++ b/include/grub/net.h |
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@@ -531,6 +531,7 @@ enum |
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GRUB_NET_DHCP_MESSAGE_TYPE = 53, |
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GRUB_NET_DHCP_SERVER_IDENTIFIER = 54, |
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GRUB_NET_DHCP_PARAMETER_REQUEST_LIST = 55, |
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+ GRUB_NET_BOOTP_VENDOR_CLASS_IDENTIFIER = 60, |
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GRUB_NET_BOOTP_CLIENT_ID = 61, |
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GRUB_NET_DHCP_TFTP_SERVER_NAME = 66, |
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GRUB_NET_DHCP_BOOTFILE_NAME = 67,
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