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From 1c9b8bec85cd2600da2f8a16ed08820300c02bee Mon Sep 17 00:00:00 2001
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From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
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Date: Tue, 27 Nov 2012 17:18:53 -0200
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Subject: [PATCH 11/34] DHCP client ID and UUID options added.
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---
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grub-core/net/bootp.c | 52 +++++++++++++++++++++++++++++++++++++++++++--------
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include/grub/net.h | 2 ++
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2 files changed, 46 insertions(+), 8 deletions(-)
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diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c
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index c14e9de..656bb71 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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@@ -60,6 +60,14 @@ set_env_limn_ro (const char *intername, const char *suffix,
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grub_free (varvalue);
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}
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+static char
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+hexdigit (grub_uint8_t val)
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+{
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+ if (val < 10)
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+ return val + '0';
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+ return val + 'a' - 10;
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+}
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+
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static void
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parse_dhcp_vendor (const char *name, const void *vend, int limit, int *mask)
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{
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@@ -90,6 +98,9 @@ parse_dhcp_vendor (const char *name, const void *vend, int limit, int *mask)
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taglength = *ptr++;
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+ grub_dprintf("net", "DHCP option %u (0x%02x) found with length %u.\n",
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+ tagtype, tagtype, taglength);
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+
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switch (tagtype)
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{
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case GRUB_NET_BOOTP_NETMASK:
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@@ -151,6 +162,39 @@ parse_dhcp_vendor (const char *name, const void *vend, int limit, int *mask)
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set_env_limn_ro (name, "extensionspath", (const char *) ptr, taglength);
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break;
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+ case GRUB_NET_BOOTP_CLIENT_ID:
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+ set_env_limn_ro (name, "clientid", (char *) ptr, taglength);
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+ break;
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+
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+ case GRUB_NET_BOOTP_CLIENT_UUID:
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+ {
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+ if (taglength != 17)
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+ break;
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+
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+ /* The format is 9cfe245e-d0c8-bd45-a79f-54ea5fbd3d97 */
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+
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+ ptr += 1;
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+ taglength -= 1;
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+
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+ char *val = grub_malloc (2 * taglength + 4 + 1);
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+ int i = 0;
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+ int j = 0;
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+ for (i = 0; i < taglength; i++)
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+ {
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+ val[2 * i + j] = hexdigit (ptr[i] >> 4);
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+ val[2 * i + 1 + j] = hexdigit (ptr[i] & 0xf);
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+
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+ if ((i == 3) || (i == 5) || (i == 7) || (i == 9))
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+ {
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+ j++;
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+ val[2 * i + 1+ j] = '-';
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+ }
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+ }
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+
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+ set_env_limn_ro (name, "clientuuid", (char *) val, 2 * taglength + 4);
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+ }
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+ break;
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+
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/* If you need any other options please contact GRUB
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development team. */
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}
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@@ -319,14 +363,6 @@ grub_net_process_dhcp (struct grub_net_buff *nb,
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}
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}
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-static char
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-hexdigit (grub_uint8_t val)
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-{
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- if (val < 10)
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- return val + '0';
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- return val + 'a' - 10;
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-}
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-
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static grub_err_t
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grub_cmd_dhcpopt (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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diff --git a/include/grub/net.h b/include/grub/net.h
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index c8ce8db..ea4978d 100644
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--- a/include/grub/net.h
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+++ b/include/grub/net.h
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@@ -433,6 +433,8 @@ enum
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GRUB_NET_BOOTP_DOMAIN = 0x0f,
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GRUB_NET_BOOTP_ROOT_PATH = 0x11,
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GRUB_NET_BOOTP_EXTENSIONS_PATH = 0x12,
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+ GRUB_NET_BOOTP_CLIENT_ID = 0x3d,
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+ GRUB_NET_BOOTP_CLIENT_UUID = 0x61,
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GRUB_NET_BOOTP_END = 0xff
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};
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--
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1.8.4.2
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