448 lines
11 KiB
C
448 lines
11 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010,2011 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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#ifndef GRUB_NET_HEADER
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#define GRUB_NET_HEADER 1
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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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#include <grub/fs.h>
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#include <grub/file.h>
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#include <grub/mm.h>
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#include <grub/net/netbuff.h>
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typedef enum grub_link_level_protocol_id
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{
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GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET
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} grub_link_level_protocol_id_t;
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typedef struct grub_net_link_level_address
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{
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grub_link_level_protocol_id_t type;
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union
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{
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grub_uint8_t mac[6];
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};
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} grub_net_link_level_address_t;
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typedef enum grub_net_interface_flags
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{
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GRUB_NET_INTERFACE_HWADDRESS_IMMUTABLE = 1,
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GRUB_NET_INTERFACE_ADDRESS_IMMUTABLE = 2,
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GRUB_NET_INTERFACE_PERMANENT = 4
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} grub_net_interface_flags_t;
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typedef enum grub_net_card_flags
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{
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GRUB_NET_CARD_HWADDRESS_IMMUTABLE = 1,
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GRUB_NET_CARD_NO_MANUAL_INTERFACES = 2
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} grub_net_card_flags_t;
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struct grub_net_card;
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struct grub_net_card_driver
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{
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struct grub_net_card_driver *next;
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const char *name;
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grub_err_t (*open) (const struct grub_net_card *dev);
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void (*close) (const struct grub_net_card *dev);
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grub_err_t (*send) (const struct grub_net_card *dev,
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struct grub_net_buff *buf);
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grub_ssize_t (*recv) (const struct grub_net_card *dev,
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struct grub_net_buff *buf);
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};
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typedef struct grub_net_packet
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{
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struct grub_net_packet *next;
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struct grub_net_packet *prev;
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struct grub_net_packets *up;
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struct grub_net_buff *nb;
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} grub_net_packet_t;
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typedef struct grub_net_packets
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{
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grub_net_packet_t *first;
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grub_net_packet_t *last;
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} grub_net_packets_t;
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#ifdef GRUB_MACHINE_EFI
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#include <grub/efi/api.h>
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#endif
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struct grub_net_card
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{
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struct grub_net_card *next;
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const char *name;
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struct grub_net_card_driver *driver;
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grub_net_link_level_address_t default_address;
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grub_net_card_flags_t flags;
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int num_ifaces;
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int opened;
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unsigned idle_poll_delay_ms;
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grub_uint64_t last_poll;
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union
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{
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#ifdef GRUB_MACHINE_EFI
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struct
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{
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struct grub_efi_simple_network *efi_net;
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grub_efi_handle_t efi_handle;
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};
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#endif
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void *data;
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int data_num;
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};
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};
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struct grub_net_network_level_interface;
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typedef enum grub_network_level_protocol_id
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{
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GRUB_NET_NETWORK_LEVEL_PROTOCOL_DHCP_RECV,
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GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4
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} grub_network_level_protocol_id_t;
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typedef struct grub_net_network_level_address
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{
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grub_network_level_protocol_id_t type;
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union
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{
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grub_uint32_t ipv4;
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};
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} grub_net_network_level_address_t;
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typedef struct grub_net_network_level_netaddress
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{
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grub_network_level_protocol_id_t type;
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union
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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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};
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} grub_net_network_level_netaddress_t;
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#define FOR_PACKETS(cont,var) for (var = (cont).first; var; var = var->next)
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static inline grub_err_t
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grub_net_put_packet (grub_net_packets_t *pkts, struct grub_net_buff *nb)
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{
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struct grub_net_packet *n;
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n = grub_malloc (sizeof (*n));
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if (!n)
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return grub_errno;
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n->nb = nb;
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n->next = NULL;
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n->prev = NULL;
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n->up = pkts;
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if (pkts->first)
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{
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pkts->last->next = n;
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pkts->last = n;
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n->prev = pkts->last;
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}
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else
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pkts->first = pkts->last = n;
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return GRUB_ERR_NONE;
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}
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static inline void
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grub_net_remove_packet (grub_net_packet_t *pkt)
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{
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if (pkt->prev)
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pkt->prev->next = pkt->next;
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else
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pkt->up->first = pkt->next;
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if (pkt->next)
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pkt->next->prev = pkt->prev;
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else
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pkt->up->last = pkt->prev;
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grub_free (pkt);
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}
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typedef struct grub_net_app_protocol *grub_net_app_level_t;
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typedef struct grub_net_socket *grub_net_socket_t;
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struct grub_net_app_protocol
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{
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struct grub_net_app_protocol *next;
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const char *name;
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grub_err_t (*dir) (grub_device_t device, const char *path,
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int (*hook) (const char *filename,
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const struct grub_dirhook_info *info));
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grub_err_t (*open) (struct grub_file *file, const char *filename);
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grub_err_t (*close) (struct grub_file *file);
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};
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struct grub_net_socket
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{
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struct grub_net_socket *next;
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enum { GRUB_NET_SOCKET_START,
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GRUB_NET_SOCKET_ESTABLISHED,
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GRUB_NET_SOCKET_CLOSED } x_status;
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int x_in_port;
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int x_out_port;
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grub_err_t (*recv_hook) (grub_net_socket_t sock, struct grub_net_buff *nb,
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void *recv);
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void *recv_hook_data;
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grub_net_network_level_address_t x_out_nla;
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struct grub_net_network_level_interface *x_inf;
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};
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extern struct grub_net_socket *grub_net_sockets;
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static inline void
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grub_net_socket_register (grub_net_socket_t sock)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_sockets),
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GRUB_AS_LIST (sock));
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}
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static inline void
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grub_net_socket_unregister (grub_net_socket_t sock)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_sockets),
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GRUB_AS_LIST (sock));
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}
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#define FOR_NET_SOCKETS(var) for (var = grub_net_sockets; var; var = var->next)
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typedef struct grub_net
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{
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char *server;
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char *name;
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grub_net_app_level_t protocol;
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grub_net_packets_t packs;
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grub_off_t offset;
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grub_fs_t fs;
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int eof;
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} *grub_net_t;
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extern grub_net_t (*EXPORT_VAR (grub_net_open)) (const char *name);
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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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struct grub_net_network_level_interface **prev;
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char *name;
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struct grub_net_card *card;
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grub_net_network_level_address_t address;
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grub_net_link_level_address_t hwaddress;
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grub_net_interface_flags_t flags;
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struct grub_net_bootp_packet *dhcp_ack;
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grub_size_t dhcp_acklen;
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void *data;
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};
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struct grub_net_session;
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struct grub_net_session_level_protocol
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{
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void (*close) (struct grub_net_session *session);
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grub_ssize_t (*recv) (struct grub_net_session *session, void *buf,
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grub_size_t size);
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grub_err_t (*send) (struct grub_net_session *session, void *buf,
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grub_size_t size);
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};
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struct grub_net_session
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{
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struct grub_net_session_level_protocol *protocol;
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void *data;
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};
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static inline void
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grub_net_session_close (struct grub_net_session *session)
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{
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session->protocol->close (session);
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}
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static inline grub_err_t
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grub_net_session_send (struct grub_net_session *session, void *buf,
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grub_size_t size)
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{
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return session->protocol->send (session, buf, size);
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}
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static inline grub_ssize_t
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grub_net_session_recv (struct grub_net_session *session, void *buf,
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grub_size_t size)
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{
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return session->protocol->recv (session, buf, size);
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}
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struct grub_net_network_level_interface *
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grub_net_add_addr (const char *name,
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struct grub_net_card *card,
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grub_net_network_level_address_t addr,
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grub_net_link_level_address_t hwaddress,
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grub_net_interface_flags_t flags);
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extern struct grub_net_network_level_interface *grub_net_network_level_interfaces;
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#define FOR_NET_NETWORK_LEVEL_INTERFACES(var) for (var = grub_net_network_level_interfaces; var; var = var->next)
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extern grub_net_app_level_t grub_net_app_level_list;
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#ifndef GRUB_LST_GENERATOR
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static inline void
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grub_net_app_level_register (grub_net_app_level_t proto)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_app_level_list),
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GRUB_AS_LIST (proto));
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}
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#endif
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static inline void
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grub_net_app_level_unregister (grub_net_app_level_t proto)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_app_level_list),
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GRUB_AS_LIST (proto));
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}
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#define FOR_NET_APP_LEVEL(var) FOR_LIST_ELEMENTS((var), \
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(grub_net_app_level_list))
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extern struct grub_net_card *grub_net_cards;
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static inline void
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grub_net_card_register (struct grub_net_card *card)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_cards),
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GRUB_AS_LIST (card));
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}
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void
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grub_net_card_unregister (struct grub_net_card *card);
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#define FOR_NET_CARDS(var) for (var = grub_net_cards; var; var = var->next)
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#define FOR_NET_CARDS_SAFE(var, next) for (var = grub_net_cards, next = var->next; var; var = next, next = var->next)
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struct grub_net_session *
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grub_net_open_tcp (char *address, grub_uint16_t port);
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grub_err_t
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grub_net_resolve_address (const char *name,
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grub_net_network_level_address_t *addr);
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grub_err_t
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grub_net_resolve_net_address (const char *name,
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grub_net_network_level_netaddress_t *addr);
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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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grub_err_t
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grub_net_add_route (const char *name,
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grub_net_network_level_netaddress_t target,
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struct grub_net_network_level_interface *inter);
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grub_err_t
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grub_net_add_route_gw (const char *name,
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grub_net_network_level_netaddress_t target,
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grub_net_network_level_address_t gw);
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#define GRUB_NET_BOOTP_MAC_ADDR_LEN 16
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typedef grub_uint8_t grub_net_bootp_mac_addr_t[GRUB_NET_BOOTP_MAC_ADDR_LEN];
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struct grub_net_bootp_packet
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{
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grub_uint8_t opcode;
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grub_uint8_t hw_type; /* hardware type. */
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grub_uint8_t hw_len; /* hardware addr len. */
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grub_uint8_t gate_hops; /* zero it. */
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grub_uint32_t ident; /* random number chosen by client. */
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grub_uint16_t seconds; /* seconds since did initial bootstrap. */
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grub_uint16_t flags;
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grub_uint32_t client_ip;
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grub_uint32_t your_ip;
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grub_uint32_t server_ip;
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grub_uint32_t gateway_ip;
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grub_net_bootp_mac_addr_t mac_addr;
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char server_name[64];
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char boot_file[128];
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grub_uint8_t vendor[0];
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} __attribute__ ((packed));
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#define GRUB_NET_BOOTP_RFC1048_MAGIC_0 0x63
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#define GRUB_NET_BOOTP_RFC1048_MAGIC_1 0x82
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#define GRUB_NET_BOOTP_RFC1048_MAGIC_2 0x53
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#define GRUB_NET_BOOTP_RFC1048_MAGIC_3 0x63
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struct grub_net_network_level_interface *
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grub_net_configure_by_dhcp_ack (const char *name,
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struct grub_net_card *card,
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grub_net_interface_flags_t flags,
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const struct grub_net_bootp_packet *bp,
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grub_size_t size,
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int is_def, char **device, char **path);
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void
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grub_net_process_dhcp (struct grub_net_buff *nb,
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struct grub_net_card *card);
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int
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grub_net_hwaddr_cmp (const grub_net_link_level_address_t *a,
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const grub_net_link_level_address_t *b);
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/*
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Currently suppoerted adresses:
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IPv4: XXX.XXX.XXX.XXX
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*/
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#define GRUB_NET_MAX_STR_ADDR_LEN sizeof ("XXX.XXX.XXX.XXX")
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void
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grub_net_addr_to_str (const grub_net_network_level_address_t *target,
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char *buf);
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#define FOR_NET_NETWORK_LEVEL_INTERFACES_SAFE(var,next) for (var = grub_net_network_level_interfaces, next = var->next; var; var = next, next = var->next)
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void
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grub_net_poll_cards (unsigned time);
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void grub_bootp_init (void);
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void grub_bootp_fini (void);
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static inline void
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grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
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{
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inter->card->num_ifaces--;
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*inter->prev = inter->next;
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if (inter->next)
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inter->next->prev = inter->prev;
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inter->next = 0;
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inter->prev = 0;
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}
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extern char *grub_net_default_server;
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#endif /* ! GRUB_NET_HEADER */
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