* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <grub/net/udp.h>
#include <grub/net.h>
#include <grub/net/netbuff.h>
-#include <grub/net/ip.h>
#include <grub/time.h>
#include <grub/file.h>
#include <grub/i18n.h>
#include <grub/dl.h>
#include <grub/command.h>
#include <grub/env.h>
-#include <grub/term.h>
#include <grub/net/ethernet.h>
-#include <grub/datetime.h>
#include <grub/loader.h>
#include <grub/bufio.h>
#include <grub/kernel.h>
GRUB_MOD_LICENSE ("GPLv3+");
-static char *default_server;
+char *grub_net_default_server;
struct grub_net_route
{
struct grub_net_network_level_protocol *grub_net_network_level_protocols = NULL;
static struct grub_fs grub_net_fs;
-static inline void
-grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
-{
- inter->card->num_ifaces--;
- *inter->prev = inter->next;
- if (inter->next)
- inter->next->prev = inter->prev;
- inter->next = 0;
- inter->prev = 0;
-}
-
void
grub_net_card_unregister (struct grub_net_card *card)
{
{
protname = "tftp";
protnamelen = sizeof ("tftp") - 1;
- server = default_server;
+ server = grub_net_default_server;
}
else
{
else
{
protnamelen = grub_strlen (name);
- server = default_server;
+ server = grub_net_default_server;
protname = name;
}
}
return grub_net_fs_read_real (file, buf, len);
}
-static char *
-grub_env_write_readonly (struct grub_env_var *var __attribute__ ((unused)),
- const char *val __attribute__ ((unused)))
-{
- return NULL;
-}
-
-static void
-set_env_limn_ro (const char *intername, const char *suffix,
- char *value, grub_size_t len)
-{
- char c;
- char varname[sizeof ("net_") + grub_strlen (intername) + sizeof ("_")
- + grub_strlen (suffix)];
- grub_snprintf (varname, sizeof (varname), "net_%s_%s", intername, suffix);
- c = value[len];
- value[len] = 0;
- grub_env_set (varname, value);
- value[len] = c;
- grub_register_variable_hook (varname, 0, grub_env_write_readonly);
-}
-
-static void
-parse_dhcp_vendor (const char *name, void *vend, int limit)
-{
- grub_uint8_t *ptr, *ptr0;
-
- ptr = ptr0 = vend;
-
- if (ptr[0] != GRUB_NET_BOOTP_RFC1048_MAGIC_0
- || ptr[1] != GRUB_NET_BOOTP_RFC1048_MAGIC_1
- || ptr[2] != GRUB_NET_BOOTP_RFC1048_MAGIC_2
- || ptr[3] != GRUB_NET_BOOTP_RFC1048_MAGIC_3)
- return;
- ptr = ptr + sizeof (grub_uint32_t);
- while (ptr - ptr0 < limit)
- {
- grub_uint8_t tagtype;
- grub_uint8_t taglength;
-
- tagtype = *ptr++;
-
- /* Pad tag. */
- if (tagtype == 0)
- continue;
-
- /* End tag. */
- if (tagtype == 0xff)
- return;
-
- taglength = *ptr++;
-
- switch (tagtype)
- {
- case 12:
- set_env_limn_ro (name, "hostname", (char *) ptr, taglength);
- break;
-
- case 15:
- set_env_limn_ro (name, "domain", (char *) ptr, taglength);
- break;
-
- case 17:
- set_env_limn_ro (name, "rootpath", (char *) ptr, taglength);
- break;
-
- case 18:
- set_env_limn_ro (name, "extensionspath", (char *) ptr, taglength);
- break;
-
- /* If you need any other options please contact GRUB
- developpement team. */
- }
-
- ptr += taglength;
- }
-}
-
-#define OFFSET_OF(x, y) ((grub_uint8_t *)((y)->x) - (grub_uint8_t *)(y))
-
-struct grub_net_network_level_interface *
-grub_net_configure_by_dhcp_ack (const char *name,
- struct grub_net_card *card,
- grub_net_interface_flags_t flags,
- const struct grub_net_bootp_packet *bp,
- grub_size_t size,
- int is_def, char **device, char **path)
-{
- grub_net_network_level_address_t addr;
- grub_net_link_level_address_t hwaddr;
- struct grub_net_network_level_interface *inter;
-
- addr.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
- addr.ipv4 = bp->your_ip;
-
- if (device)
- *device = 0;
- if (path)
- *path = 0;
-
- grub_memcpy (hwaddr.mac, bp->mac_addr,
- bp->hw_len < sizeof (hwaddr.mac) ? bp->hw_len
- : sizeof (hwaddr.mac));
- hwaddr.type = GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET;
-
- inter = grub_net_add_addr (name, card, addr, hwaddr, flags);
- {
- grub_net_network_level_netaddress_t target;
- grub_net_network_level_address_t gw;
- char rname[grub_strlen (name) + sizeof ("_gw")];
-
- target.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
- target.ipv4.base = bp->server_ip;
- target.ipv4.masksize = 32;
- gw.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
- gw.ipv4 = bp->gateway_ip;
- grub_snprintf (rname, sizeof (rname), "%s_gw", name);
- grub_net_add_route_gw (rname, target, gw);
- }
- {
- grub_net_network_level_netaddress_t target;
- target.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
- target.ipv4.base = bp->gateway_ip;
- target.ipv4.masksize = 32;
- grub_net_add_route (name, target, inter);
- }
-
- if (size > OFFSET_OF (boot_file, bp))
- set_env_limn_ro (name, "boot_file", (char *) bp->boot_file,
- sizeof (bp->boot_file));
- if (is_def)
- default_server = 0;
- if (size > OFFSET_OF (server_name, bp)
- && bp->server_name[0])
- {
- set_env_limn_ro (name, "dhcp_server_name", (char *) bp->server_name,
- sizeof (bp->server_name));
- if (is_def && !default_server)
- {
- default_server = grub_strdup (bp->server_name);
- grub_print_error ();
- }
- if (device && !*device)
- {
- *device = grub_xasprintf ("tftp,%s", bp->server_name);
- grub_print_error ();
- }
- }
- if (is_def && !default_server)
- {
- default_server = grub_xasprintf ("%d.%d.%d.%d",
- ((grub_uint8_t *) &bp->server_ip)[0],
- ((grub_uint8_t *) &bp->server_ip)[1],
- ((grub_uint8_t *) &bp->server_ip)[2],
- ((grub_uint8_t *) &bp->server_ip)[3]);
- grub_print_error ();
- }
-
- if (device && !*device)
- {
- *device = grub_xasprintf ("tftp,%d.%d.%d.%d",
- ((grub_uint8_t *) &bp->server_ip)[0],
- ((grub_uint8_t *) &bp->server_ip)[1],
- ((grub_uint8_t *) &bp->server_ip)[2],
- ((grub_uint8_t *) &bp->server_ip)[3]);
- grub_print_error ();
- }
- if (size > OFFSET_OF (boot_file, bp) && path)
- {
- *path = grub_strndup (bp->boot_file, sizeof (bp->boot_file));
- grub_print_error ();
- if (*path)
- {
- char *slash;
- slash = grub_strrchr (*path, '/');
- if (slash)
- *slash = 0;
- else
- **path = 0;
- }
- }
- if (size > OFFSET_OF (vendor, bp))
- parse_dhcp_vendor (name, &bp->vendor, size - OFFSET_OF (vendor, bp));
-
- inter->dhcp_ack = grub_malloc (size);
- if (inter->dhcp_ack)
- {
- grub_memcpy (inter->dhcp_ack, bp, size);
- inter->dhcp_acklen = size;
- }
- else
- grub_errno = GRUB_ERR_NONE;
-
- return inter;
-}
-
-void
-grub_net_process_dhcp (struct grub_net_buff *nb,
- struct grub_net_card *card)
-{
- char *name;
- struct grub_net_network_level_interface *inf;
-
- name = grub_xasprintf ("%s:dhcp", card->name);
- if (!name)
- {
- grub_print_error ();
- return;
- }
- grub_net_configure_by_dhcp_ack (name, card,
- 0, (const struct grub_net_bootp_packet *) nb->data,
- (nb->tail - nb->data), 0, 0, 0);
- grub_free (name);
- if (grub_errno)
- grub_print_error ();
- else
- {
- FOR_NET_NETWORK_LEVEL_INTERFACES(inf)
- if (grub_memcmp (inf->name, card->name, grub_strlen (card->name)) == 0
- && grub_memcmp (inf->name + grub_strlen (card->name),
- ":dhcp_tmp", sizeof (":dhcp_tmp") - 1) == 0)
- {
- grub_net_network_level_interface_unregister (inf);
- break;
- }
- }
-}
-
-static char
-hexdigit (grub_uint8_t val)
-{
- if (val < 10)
- return val + '0';
- return val + 'a' - 10;
-}
-
-static grub_err_t
-grub_cmd_dhcpopt (struct grub_command *cmd __attribute__ ((unused)),
- int argc, char **args)
-{
- struct grub_net_network_level_interface *inter;
- int num;
- grub_uint8_t *ptr;
- grub_uint8_t taglength;
-
- if (argc < 4)
- return grub_error (GRUB_ERR_BAD_ARGUMENT, "4 arguments expected");
-
- FOR_NET_NETWORK_LEVEL_INTERFACES (inter)
- if (grub_strcmp (inter->name, args[1]) == 0)
- break;
-
- if (!inter)
- return grub_error (GRUB_ERR_BAD_ARGUMENT,
- N_("unrecognised interface %s"), args[1]);
-
- if (!inter->dhcp_ack)
- return grub_error (GRUB_ERR_IO, N_("no DHCP info found"));
-
- if (inter->dhcp_acklen <= OFFSET_OF (vendor, inter->dhcp_ack))
- return grub_error (GRUB_ERR_IO, N_("no DHCP options found"));
-
- num = grub_strtoul (args[2], 0, 0);
- if (grub_errno)
- return grub_errno;
-
- ptr = inter->dhcp_ack->vendor;
-
- if (ptr[0] != GRUB_NET_BOOTP_RFC1048_MAGIC_0
- || ptr[1] != GRUB_NET_BOOTP_RFC1048_MAGIC_1
- || ptr[2] != GRUB_NET_BOOTP_RFC1048_MAGIC_2
- || ptr[3] != GRUB_NET_BOOTP_RFC1048_MAGIC_3)
- return grub_error (GRUB_ERR_IO, N_("no DHCP options found"));
- ptr = ptr + sizeof (grub_uint32_t);
- while (1)
- {
- grub_uint8_t tagtype;
-
- if (ptr >= ((grub_uint8_t *) inter->dhcp_ack) + inter->dhcp_acklen)
- return grub_error (GRUB_ERR_IO, N_("no DHCP option %d found"), num);
-
- tagtype = *ptr++;
-
- /* Pad tag. */
- if (tagtype == 0)
- continue;
-
- /* End tag. */
- if (tagtype == 0xff)
- return grub_error (GRUB_ERR_IO, N_("no DHCP option %d found"), num);
-
- taglength = *ptr++;
-
- if (tagtype == num)
- break;
- ptr += taglength;
- }
-
- if (grub_strcmp (args[3], "string") == 0)
- {
- char *val = grub_malloc (taglength + 1);
- if (!val)
- return grub_errno;
- grub_memcpy (val, ptr, taglength);
- val[taglength] = 0;
- if (args[0][0] == '-' && args[0][1] == 0)
- grub_printf ("%s\n", val);
- else
- return grub_env_set (args[0], val);
- return GRUB_ERR_NONE;
- }
-
- if (grub_strcmp (args[3], "number") == 0)
- {
- grub_uint64_t val = 0;
- int i;
- for (i = 0; i < taglength; i++)
- val = (val << 8) | ptr[i];
- if (args[0][0] == '-' && args[0][1] == 0)
- grub_printf ("%llu\n", (unsigned long long) val);
- else
- {
- char valn[64];
- grub_printf (valn, sizeof (valn), "%lld\n", (unsigned long long) val);
- return grub_env_set (args[0], valn);
- }
- return GRUB_ERR_NONE;
- }
-
- if (grub_strcmp (args[3], "hex") == 0)
- {
- char *val = grub_malloc (2 * taglength + 1);
- int i;
- if (!val)
- return grub_errno;
- for (i = 0; i < taglength; i++)
- {
- val[2 * i] = hexdigit (ptr[i] >> 4);
- val[2 * i + 1] = hexdigit (ptr[i] & 0xf);
- }
- val[2 * taglength] = 0;
- if (args[0][0] == '-' && args[0][1] == 0)
- grub_printf ("%s\n", val);
- else
- return grub_env_set (args[0], val);
- return GRUB_ERR_NONE;
- }
-
- return grub_error (GRUB_ERR_BAD_ARGUMENT,
- "unrecognised format specification %s", args[3]);
-}
-
-static grub_err_t
-grub_cmd_bootp (struct grub_command *cmd __attribute__ ((unused)),
- int argc, char **args)
-{
- struct grub_net_card *card;
- struct grub_net_network_level_interface *ifaces;
- grub_size_t ncards = 0;
- unsigned j = 0;
- int interval;
- grub_err_t err;
-
- FOR_NET_CARDS (card)
- {
- if (argc > 0 && grub_strcmp (card->name, args[0]) != 0)
- continue;
- ncards++;
- }
-
- ifaces = grub_zalloc (ncards * sizeof (ifaces[0]));
- if (!ifaces)
- return grub_errno;
-
- j = 0;
- FOR_NET_CARDS (card)
- {
- if (argc > 0 && grub_strcmp (card->name, args[0]) != 0)
- continue;
- ifaces[j].card = card;
- ifaces[j].next = &ifaces[j+1];
- if (j)
- ifaces[j].prev = &ifaces[j-1].next;
- ifaces[j].name = grub_xasprintf ("%s:dhcp_tmp", card->name);
- card->num_ifaces++;
- if (!ifaces[j].name)
- {
- unsigned i;
- for (i = 0; i < j; i++)
- grub_free (ifaces[i].name);
- grub_free (ifaces);
- return grub_errno;
- }
- ifaces[j].address.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_DHCP_RECV;
- grub_memcpy (&ifaces[j].hwaddress, &card->default_address,
- sizeof (ifaces[j].hwaddress));
- j++;
- }
- ifaces[ncards - 1].next = grub_net_network_level_interfaces;
- if (grub_net_network_level_interfaces)
- grub_net_network_level_interfaces->prev = & ifaces[ncards - 1].next;
- grub_net_network_level_interfaces = &ifaces[0];
- ifaces[0].prev = &grub_net_network_level_interfaces;
- for (interval = 200; interval < 10000; interval *= 2)
- {
- int done = 0;
- for (j = 0; j < ncards; j++)
- {
- struct grub_net_bootp_packet *pack;
- struct grub_datetime date;
- grub_int32_t t;
- struct grub_net_buff *nb;
- struct udphdr *udph;
- grub_net_network_level_address_t target;
-
- if (!ifaces[j].prev)
- continue;
- nb = grub_netbuff_alloc (sizeof (*pack));
- if (!nb)
- return grub_errno;
- err = grub_netbuff_reserve (nb, sizeof (*pack) + 64 + 128);
- if (err)
- return err;
- err = grub_netbuff_push (nb, sizeof (*pack) + 64);
- if (err)
- return err;
- pack = (void *) nb->data;
- done = 1;
- grub_memset (pack, 0, sizeof (*pack) + 64);
- pack->opcode = 1;
- pack->hw_type = 1;
- pack->hw_len = 6;
- err = grub_get_datetime (&date);
- if (err || !grub_datetime2unixtime (&date, &t))
- {
- grub_errno = GRUB_ERR_NONE;
- t = 0;
- }
- pack->ident = grub_cpu_to_be32 (t);
- pack->seconds = 0;//grub_cpu_to_be16 (t);
-
- grub_memcpy (&pack->mac_addr, &ifaces[j].hwaddress.mac, 6);
-
- grub_netbuff_push (nb, sizeof (*udph));
-
- udph = (struct udphdr *) nb->data;
- udph->src = grub_cpu_to_be16 (68);
- udph->dst = grub_cpu_to_be16 (67);
- udph->chksum = 0;
- udph->len = grub_cpu_to_be16 (nb->tail - nb->data);
-
- target.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
- target.ipv4 = 0xffffffff;
-
- err = grub_net_send_ip_packet (&ifaces[j], &target, nb);
- if (err)
- return err;
- }
- if (!done)
- break;
- grub_net_poll_cards (interval);
- }
-
- err = GRUB_ERR_NONE;
- for (j = 0; j < ncards; j++)
- {
- if (!ifaces[j].prev)
- continue;
- grub_error_push ();
- grub_net_network_level_interface_unregister (&ifaces[j]);
- err = grub_error (GRUB_ERR_FILE_NOT_FOUND, "couldn't configure %s",
- ifaces[j].card->name);
- }
-
- return err;
-}
-
static struct grub_fs grub_net_fs =
{
.name = "netfs",
static void *fini_hnd;
static grub_command_t cmd_addaddr, cmd_deladdr, cmd_addroute, cmd_delroute;
-static grub_command_t cmd_lsroutes, cmd_lscards, cmd_getdhcp, cmd_bootp;
-static grub_command_t cmd_dhcp, cmd_lsaddr;
+static grub_command_t cmd_lsroutes, cmd_lscards;
+static grub_command_t cmd_lsaddr;
GRUB_MOD_INIT(net)
{
"", N_("list network cards"));
cmd_lsaddr = grub_register_command ("net_ls_addr", grub_cmd_listaddrs,
"", N_("list network addresses"));
- cmd_bootp = grub_register_command ("net_bootp", grub_cmd_bootp,
- "[CARD]",
- N_("perform a bootp autoconfiguration"));
- cmd_dhcp = grub_register_command ("net_dhcp", grub_cmd_bootp,
- "[CARD]",
- N_("perform a bootp autoconfiguration"));
- cmd_getdhcp = grub_register_command ("net_get_dhcp_option", grub_cmd_dhcpopt,
- N_("VAR INTERFACE NUMBER DESCRIPTION"),
- N_("retrieve DHCP option and save it into VAR. If VAR is - then print the value."));
+ grub_bootp_init ();
grub_fs_register (&grub_net_fs);
grub_net_open = grub_net_open_real;
GRUB_MOD_FINI(net)
{
+ grub_bootp_fini ();
grub_unregister_command (cmd_addaddr);
grub_unregister_command (cmd_deladdr);
grub_unregister_command (cmd_addroute);
grub_unregister_command (cmd_lsroutes);
grub_unregister_command (cmd_lscards);
grub_unregister_command (cmd_lsaddr);
- grub_unregister_command (cmd_getdhcp);
grub_fs_unregister (&grub_net_fs);
grub_net_open = NULL;
grub_net_fini_hw (0);
projects / thirdparty / grub.git / commitdiff
