| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| /*** |
| Copyright © 2013 Intel Corporation. All rights reserved. |
| ***/ |
| |
| #include <linux/if_packet.h> |
| #include <net/ethernet.h> |
| #include <stdint.h> |
| |
| #include "sd-dhcp-client.h" |
| |
| #include "dhcp-protocol.h" |
| #include "log-link.h" |
| #include "socket-util.h" |
| |
| typedef struct sd_dhcp_option { |
| unsigned n_ref; |
| |
| uint8_t option; |
| void *data; |
| size_t length; |
| } sd_dhcp_option; |
| |
| typedef struct DHCPServerData { |
| struct in_addr *addr; |
| size_t size; |
| } DHCPServerData; |
| |
| extern const struct hash_ops dhcp_option_hash_ops; |
| |
| typedef struct sd_dhcp_client sd_dhcp_client; |
| |
| int dhcp_network_bind_raw_socket(int ifindex, union sockaddr_union *link, uint32_t xid, |
| const uint8_t *mac_addr, size_t mac_addr_len, |
| const uint8_t *bcast_addr, size_t bcast_addr_len, |
| uint16_t arp_type, uint16_t port); |
| int dhcp_network_bind_udp_socket(int ifindex, be32_t address, uint16_t port, int ip_service_type); |
| int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, |
| const void *packet, size_t len); |
| int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, |
| const void *packet, size_t len); |
| |
| int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, |
| uint8_t code, size_t optlen, const void *optval); |
| int dhcp_option_find_option(uint8_t *options, size_t length, uint8_t wanted_code, size_t *ret_offset); |
| int dhcp_option_remove_option(uint8_t *options, size_t buflen, uint8_t option_code); |
| |
| typedef int (*dhcp_option_callback_t)(uint8_t code, uint8_t len, |
| const void *option, void *userdata); |
| |
| int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_callback_t cb, void *userdata, char **error_message); |
| |
| int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, |
| uint8_t type, uint16_t arp_type, size_t optlen, |
| size_t *optoffset); |
| |
| uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len); |
| |
| void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, |
| uint16_t source, be32_t destination_addr, |
| uint16_t destination, uint16_t len, int ip_service_type); |
| |
| int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum, uint16_t port); |
| |
| void dhcp_client_set_test_mode(sd_dhcp_client *client, bool test_mode); |
| |
| /* If we are invoking callbacks of a dhcp-client, ensure unreffing the |
| * client from the callback doesn't destroy the object we are working |
| * on */ |
| #define DHCP_CLIENT_DONT_DESTROY(client) \ |
| _cleanup_(sd_dhcp_client_unrefp) _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client) |
| |
| #define log_dhcp_client_errno(client, error, fmt, ...) \ |
| log_interface_prefix_full_errno( \ |
| "DHCPv4 client: ", \ |
| sd_dhcp_client_get_ifname(client), \ |
| error, fmt, ##__VA_ARGS__) |
| #define log_dhcp_client(client, fmt, ...) \ |
| log_interface_prefix_full_errno_zerook( \ |
| "DHCPv4 client: ", \ |
| sd_dhcp_client_get_ifname(client), \ |
| 0, fmt, ##__VA_ARGS__) |