Network infrastructure
This commit is contained in:
Vladimir 'phcoder' Serbinenko
Manoel R. Abranches
parent
e9b29642bd
commit
4931b0984b
7 changed files with 522 additions and 43 deletions
296
commands/net.c
Normal file
296
commands/net.c
Normal file
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@ -0,0 +1,296 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/net.h>
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#include <grub/i18n.h>
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#include <grub/mm.h>
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#include <grub/dl.h>
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#include <grub/command.h>
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struct grub_net_route *grub_net_routes = NULL;
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struct grub_net_network_level_interface *grub_net_network_level_interfaces = NULL;
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struct grub_net_card *grub_net_cards = NULL;
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struct grub_net_network_level_protocol *grub_net_network_level_protocols = NULL;
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grub_err_t
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grub_net_resolve_address (struct grub_net_network_level_protocol **prot,
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char *name,
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grub_net_network_level_address_t *addr)
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{
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FOR_NET_NETWORK_LEVEL_PROTOCOLS (*prot)
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{
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grub_err_t err;
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err = grub_net_resolve_address_in_protocol (*prot, name, addr);
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if (err == GRUB_ERR_NET_BAD_ADDRESS)
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{
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grub_errno = GRUB_ERR_NONE;
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continue;
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}
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if (err)
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return err;
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return GRUB_ERR_NONE;
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}
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return grub_error (GRUB_ERR_NET_BAD_ADDRESS, N_("Unrecognised address %s"),
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name);
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}
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grub_err_t
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grub_net_route_address (grub_net_network_level_address_t addr,
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grub_net_network_level_address_t *gateway,
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struct grub_net_network_level_interface **interf)
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{
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struct grub_net_route *route;
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int depth = 0;
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int routecnt = 0;
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struct grub_net_network_level_protocol *prot = NULL;
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grub_net_network_level_address_t curtarget = addr;
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*gateway = addr;
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FOR_NET_ROUTES(route)
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routecnt++;
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for (depth = 0; depth < routecnt + 2; depth++)
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{
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FOR_NET_ROUTES(route)
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{
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if (depth && prot != route->prot)
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continue;
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prot = route->prot;
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if (!route->prot->match_net (route->target, curtarget))
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continue;
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if (route->is_gateway)
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{
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if (depth == 0)
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*gateway = route->gw;
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curtarget = route->gw;
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break;
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}
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*interf = route->interface;
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return GRUB_ERR_NONE;
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}
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if (route == NULL)
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return grub_error (GRUB_ERR_NET_NO_ROUTE, "destination unreachable");
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}
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return grub_error (GRUB_ERR_NET_ROUTE_LOOP, "route loop detected");
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}
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static grub_err_t
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grub_cmd_deladdr (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_net_network_level_interface *inter;
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if (argc != 4)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
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FOR_NET_NETWORK_LEVEL_INTERFACES (inter)
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if (grub_strcmp (inter->name, args[1]))
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break;
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if (inter == NULL)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("address not found"));
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inter->protocol->fini (inter);
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grub_net_network_level_interface_unregister (inter);
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grub_free (inter->name);
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grub_free (inter);
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_addaddr (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_net_card *card;
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struct grub_net_network_level_protocol *prot;
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grub_err_t err;
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grub_net_network_level_address_t addr;
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struct grub_net_network_level_interface *inter;
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if (argc != 4)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("four arguments expected"));
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FOR_NET_CARDS (card)
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if (grub_strcmp (card->name, args[1]))
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break;
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if (card == NULL)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("card not found"));
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FOR_NET_NETWORK_LEVEL_PROTOCOLS (prot)
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if (grub_strcmp (prot->name, args[2]))
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break;
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if (card == NULL)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("protocol not found"));
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err = grub_net_resolve_address_in_protocol (prot, args[3], &addr);
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if (err)
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return err;
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inter = grub_zalloc (sizeof (*inter));
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if (!inter)
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return grub_errno;
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inter->name = grub_strdup (args[0]);
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inter->protocol = prot;
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grub_memcpy (&(inter->address), &addr, sizeof (inter->address));
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inter->card = card;
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err = prot->init (inter);
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if (err)
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{
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grub_free (inter->name);
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grub_free (inter);
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return err;
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}
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grub_net_network_level_interface_register (inter);
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_delroute (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_net_route *route;
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struct grub_net_route **prev;
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if (argc != 1)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
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for (prev = &grub_net_routes, route = *prev; route; prev = &((*prev)->next),
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route = *prev)
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if (grub_strcmp (route->name, args[0]) == 0)
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{
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*prev = route->next;
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grub_free (route->name);
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grub_free (route);
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_addroute (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_net_network_level_protocol *prot;
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struct grub_net_route *route;
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if (argc < 3)
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return grub_error (GRUB_ERR_BAD_ARGUMENT,
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N_("At least 3 arguments are expected"));
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route = grub_zalloc (sizeof (*route));
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if (!route)
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return grub_errno;
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route->name = grub_strdup (args[0]);
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if (!route->name)
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{
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grub_free (route);
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return grub_errno;
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}
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FOR_NET_NETWORK_LEVEL_PROTOCOLS(prot)
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{
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grub_err_t err;
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err = prot->net_ntoa (args[1], &(route->target));
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if (err == GRUB_ERR_NET_BAD_ADDRESS)
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{
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grub_errno = GRUB_ERR_NONE;
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continue;
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}
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if (err)
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return err;
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break;
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}
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if (!prot)
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{
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grub_free (route->name);
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grub_free (route);
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return grub_error (GRUB_ERR_NET_BAD_ADDRESS,
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N_("Unrecognised address %s"), args[1]);
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}
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if (grub_strcmp (args[2], "gw") == 0 && argc >= 4)
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{
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grub_err_t err;
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route->is_gateway = 1;
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err = grub_net_resolve_address_in_protocol (prot,
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args[3], &(route->gw));
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if (err)
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{
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grub_free (route->name);
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grub_free (route);
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return err;
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}
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}
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else
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{
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struct grub_net_network_level_interface *inter;
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route->is_gateway = 0;
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FOR_NET_NETWORK_LEVEL_INTERFACES (inter)
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if (grub_strcmp (inter->name, args[2]))
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break;
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if (!inter)
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{
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grub_free (route->name);
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grub_free (route);
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return grub_error (GRUB_ERR_BAD_ARGUMENT,
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N_("Unrecognised interface %s"), args[2]);
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}
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route->interface = inter;
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}
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grub_net_route_register (route);
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return GRUB_ERR_NONE;
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}
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static grub_command_t cmd_addaddr, cmd_deladdr, cmd_addroute, cmd_delroute;
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GRUB_MOD_INIT(net)
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{
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cmd_addaddr = grub_register_command ("net_add_addr", grub_cmd_addaddr,
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"SHORTNAME CARD PROTOCOL ADDRESS",
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N_("Add a network address."));
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cmd_deladdr = grub_register_command ("net_del_addr", grub_cmd_deladdr,
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"SHORTNAME",
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N_("Delete a network address."));
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cmd_addroute = grub_register_command ("net_add_route", grub_cmd_addroute,
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"SHORTNAME NET [INTERFACE| gw GATEWAY]",
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N_("Add a network route."));
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cmd_delroute = grub_register_command ("net_del_route", grub_cmd_delroute,
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"SHORTNAME",
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N_("Delete a network route."));
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}
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GRUB_MOD_FINI(net)
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{
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grub_unregister_command (cmd_addaddr);
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grub_unregister_command (cmd_deladdr);
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grub_unregister_command (cmd_addroute);
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grub_unregister_command (cmd_delroute);
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}
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@ -72,7 +72,7 @@ grub_cmd_probe (grub_extcmd_t cmd, int argc, char **args)
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{
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const char *val = "none";
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if (dev->net)
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val = dev->net->dev->name;
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val = dev->net->name;
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if (dev->disk)
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val = dev->disk->dev->name;
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if (state[0].set)
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@ -828,4 +828,10 @@ bin_UTILITIES += grub-mkpasswd-pbkdf2
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grub_mkpasswd_pbkdf2_SOURCES = gnulib/progname.c gnulib/getdelim.c gnulib/getline.c util/grub-mkpasswd-pbkdf2.c lib/crypto.c lib/libgcrypt-grub/cipher/sha512.c lib/pbkdf2.c util/misc.c kern/emu/misc.c kern/emu/mm.c kern/err.c
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grub_mkpasswd_pbkdf2_CFLAGS += -Wno-missing-field-initializers -Wno-error -I$(srcdir)/lib/libgcrypt_wrap -DGRUB_MKPASSWD=1
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pkglib_MODULES += net.mod
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net_mod_SOURCES = commands/net.c
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net_mod_CFLAGS = $(COMMON_CFLAGS)
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net_mod_LDFLAGS = $(COMMON_LDFLAGS)
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include $(srcdir)/conf/gcry.mk
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@ -24,8 +24,12 @@
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#include <grub/err.h>
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struct grub_disk;
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struct grub_net;
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struct grub_fs;
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struct grub_net
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{
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char *name;
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struct grub_fs *fs;
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};
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struct grub_device
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{
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@ -54,7 +54,10 @@ typedef enum
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GRUB_ERR_MENU,
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GRUB_ERR_TIMEOUT,
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GRUB_ERR_IO,
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GRUB_ERR_ACCESS_DENIED
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GRUB_ERR_ACCESS_DENIED,
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GRUB_ERR_NET_BAD_ADDRESS,
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GRUB_ERR_NET_ROUTE_LOOP,
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GRUB_ERR_NET_NO_ROUTE
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}
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grub_err_t;
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@ -1,6 +1,6 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2007 Free Software Foundation, Inc.
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -19,54 +19,224 @@
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#ifndef GRUB_NET_HEADER
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#define GRUB_NET_HEADER 1
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#include <grub/symbol.h>
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#include <grub/err.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/list.h>
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struct grub_net;
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struct grub_net_card;
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struct grub_net_dev
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struct grub_net_card_driver
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{
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/* The device name. */
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const char *name;
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/* FIXME: Just a template. */
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int (*probe) (struct grub_net *net, const void *addr);
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void (*reset) (struct grub_net *net);
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int (*poll) (struct grub_net *net);
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void (*transmit) (struct grub_net *net, const void *destip,
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unsigned srcsock, unsigned destsock, const void *packet);
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void (*disable) (struct grub_net *net);
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/* The next net device. */
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struct grub_net_dev *next;
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grub_err_t (*send) (struct grub_net_card *dev, void *buf,
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grub_size_t buflen);
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grub_size_t (*recv) (struct grub_net_card *dev, void *buf,
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grub_size_t buflen);
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};
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typedef struct grub_net_dev *grub_net_dev_t;
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struct grub_fs;
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struct grub_net
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struct grub_net_card
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{
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/* The net name. */
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const char *name;
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/* The underlying disk device. */
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grub_net_dev_t dev;
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/* The binding filesystem. */
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struct grub_fs *fs;
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/* FIXME: More data would be required, such as an IP address, a mask,
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a gateway, etc. */
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/* Device-specific data. */
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struct grub_net_card *next;
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char *name;
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struct grub_net_card_driver *driver;
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void *data;
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};
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typedef struct grub_net *grub_net_t;
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/* FIXME: How to abstract networks? More consideration is necessary. */
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struct grub_net_network_level_interface;
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typedef union grub_net_network_level_address
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{
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grub_uint32_t ipv4;
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} grub_net_network_level_netaddress_t;
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typedef union grub_net_network_level_netaddress
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{
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struct {
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grub_uint32_t base;
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int masksize;
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} ipv4;
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} grub_net_network_level_address_t;
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typedef enum grub_network_level_protocol_id
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{
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GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4
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} grub_network_level_protocol_id_t;
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struct grub_net_network_level_interface;
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struct grub_net_network_level_protocol
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{
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struct grub_net_network_level_protocol *next;
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char *name;
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grub_network_level_protocol_id_t id;
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grub_err_t (*ntoa) (char *name, grub_net_network_level_address_t *addr);
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char * (*aton) (union grub_net_network_level_address addr);
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grub_err_t (*net_ntoa) (char *name,
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grub_net_network_level_netaddress_t *addr);
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char * (*net_aton) (grub_net_network_level_netaddress_t addr);
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int (* match_net) (grub_net_network_level_netaddress_t net,
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grub_net_network_level_address_t addr);
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grub_err_t (*init) (struct grub_net_network_level_interface *dev);
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grub_err_t (*fini) (struct grub_net_network_level_interface *dev);
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grub_err_t (*send) (struct grub_net_network_level_interface *dev, void *buf,
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grub_size_t buflen);
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grub_size_t (*recv) (struct grub_net_network_level_interface *dev, void *buf,
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grub_size_t buflen);
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};
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struct grub_net_network_level_interface
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{
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struct grub_net_network_level_interface *next;
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char *name;
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/* Underlying protocol. */
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struct grub_net_network_level_protocol *protocol;
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struct grub_net_card *card;
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union grub_net_network_level_address address;
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void *data;
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};
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struct grub_net_route
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{
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struct grub_net_route *next;
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grub_net_network_level_netaddress_t target;
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char *name;
|
||||
struct grub_net_network_level_protocol *prot;
|
||||
int is_gateway;
|
||||
union
|
||||
{
|
||||
struct grub_net_network_level_interface *interface;
|
||||
grub_net_network_level_address_t gw;
|
||||
};
|
||||
};
|
||||
|
||||
struct grub_net_session;
|
||||
|
||||
struct grub_net_session_level_protocol
|
||||
{
|
||||
void (*close) (struct grub_net_session *session);
|
||||
grub_ssize_t (*recv) (struct grub_net_session *session, void *buf,
|
||||
grub_size_t size);
|
||||
grub_err_t (*send) (struct grub_net_session *session, void *buf,
|
||||
grub_size_t size);
|
||||
};
|
||||
|
||||
struct grub_net_session
|
||||
{
|
||||
struct grub_net_session_level_protocol *protocol;
|
||||
void *data;
|
||||
};
|
||||
|
||||
static inline void
|
||||
grub_net_session_close (struct grub_net_session *session)
|
||||
{
|
||||
session->protocol->close (session);
|
||||
}
|
||||
|
||||
static inline grub_err_t
|
||||
grub_net_session_send (struct grub_net_session *session, void *buf,
|
||||
grub_size_t size)
|
||||
{
|
||||
return session->protocol->send (session, buf, size);
|
||||
}
|
||||
|
||||
static inline grub_ssize_t
|
||||
grub_net_session_recv (struct grub_net_session *session, void *buf,
|
||||
grub_size_t size)
|
||||
{
|
||||
return session->protocol->recv (session, buf, size);
|
||||
}
|
||||
|
||||
extern struct grub_net_network_level_interface *grub_net_network_level_interfaces;
|
||||
|
||||
static inline void
|
||||
grub_net_network_level_interface_register (struct grub_net_network_level_interface *inter)
|
||||
{
|
||||
grub_list_push (GRUB_AS_LIST_P (&grub_net_network_level_interfaces),
|
||||
GRUB_AS_LIST (inter));
|
||||
}
|
||||
|
||||
static inline void
|
||||
grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
|
||||
{
|
||||
grub_list_remove (GRUB_AS_LIST_P (&grub_net_network_level_interfaces),
|
||||
GRUB_AS_LIST (inter));
|
||||
}
|
||||
|
||||
#define FOR_NET_NETWORK_LEVEL_INTERFACES(var) for (var = grub_net_network_level_interfaces; var; var = var->next)
|
||||
|
||||
extern struct grub_net_route *grub_net_routes;
|
||||
|
||||
static inline void
|
||||
grub_net_route_register (struct grub_net_route *route)
|
||||
{
|
||||
grub_list_push (GRUB_AS_LIST_P (&grub_net_routes),
|
||||
GRUB_AS_LIST (route));
|
||||
}
|
||||
|
||||
static inline void
|
||||
grub_net_route_unregister (struct grub_net_route *route)
|
||||
{
|
||||
grub_list_remove (GRUB_AS_LIST_P (&grub_net_routes),
|
||||
GRUB_AS_LIST (route));
|
||||
}
|
||||
|
||||
#define FOR_NET_ROUTES(var) for (var = grub_net_routes; var; var = var->next)
|
||||
|
||||
extern struct grub_net_card *grub_net_cards;
|
||||
|
||||
static inline void
|
||||
grub_net_card_register (struct grub_net_card *card)
|
||||
{
|
||||
grub_list_push (GRUB_AS_LIST_P (&grub_net_cards),
|
||||
GRUB_AS_LIST (card));
|
||||
}
|
||||
|
||||
static inline void
|
||||
grub_net_card_unregister (struct grub_net_card *card)
|
||||
{
|
||||
grub_list_remove (GRUB_AS_LIST_P (&grub_net_cards),
|
||||
GRUB_AS_LIST (card));
|
||||
}
|
||||
|
||||
#define FOR_NET_CARDS(var) for (var = grub_net_cards; var; var = var->next)
|
||||
|
||||
extern struct grub_net_network_level_protocol *grub_net_network_level_protocols;
|
||||
|
||||
static inline void
|
||||
grub_net_network_level_protocol_register (struct grub_net_network_level_protocol *prot)
|
||||
{
|
||||
grub_list_push (GRUB_AS_LIST_P (&grub_net_network_level_protocols),
|
||||
GRUB_AS_LIST (prot));
|
||||
}
|
||||
|
||||
static inline void
|
||||
grub_net_network_level_protocol_unregister (struct grub_net_network_level_protocol *prot)
|
||||
{
|
||||
grub_list_remove (GRUB_AS_LIST_P (&grub_net_network_level_protocols),
|
||||
GRUB_AS_LIST (prot));
|
||||
}
|
||||
|
||||
#define FOR_NET_NETWORK_LEVEL_PROTOCOLS(var) for ((var) = grub_net_network_level_protocols; (var); (var) = (var)->next)
|
||||
|
||||
static inline grub_err_t
|
||||
grub_net_resolve_address_in_protocol (struct grub_net_network_level_protocol *prot,
|
||||
char *name,
|
||||
grub_net_network_level_address_t *addr)
|
||||
{
|
||||
return prot->ntoa (name, addr);
|
||||
}
|
||||
|
||||
struct grub_net_session *
|
||||
grub_net_open_tcp (char *address, grub_uint16_t port);
|
||||
|
||||
grub_err_t
|
||||
grub_net_resolve_address (struct grub_net_network_level_protocol **prot,
|
||||
char *name,
|
||||
grub_net_network_level_address_t *addr);
|
||||
|
||||
grub_err_t
|
||||
grub_net_route_address (grub_net_network_level_address_t addr,
|
||||
grub_net_network_level_address_t *gateway,
|
||||
struct grub_net_network_level_interface **interf);
|
||||
|
||||
/* Note: Networks are very different from disks, because networks must
|
||||
be initialized before used, and the status is persistent. */
|
||||
|
||||
#endif /* ! GRUB_NET_HEADER */
|
||||
|
|
|
|||
|
|
@ -94,7 +94,7 @@ grub_fs_probe (grub_device_t device)
|
|||
count--;
|
||||
}
|
||||
}
|
||||
else if (device->net->fs)
|
||||
else if (device->net)
|
||||
return device->net->fs;
|
||||
|
||||
grub_error (GRUB_ERR_UNKNOWN_FS, "unknown filesystem");
|
||||
|
|
|
|||
Loading…
Reference in a new issue