7354900ddd
When specifying `DHCPv4.SendOption=`, it is used by systemd-networkd to set the value of that option within the DHCP request that is sent out. This differs to setting `DHCPServer.SendOption=`, which will place all the options together as suboptions into the vendor-specific information (code 43) option. This commit adds two new config options, `DHCPv4.SendVendorOption=` and `DHCPServer.SendVendorOption=`. These both have the behaviour of the old `DHCPServer.SendOption=` flag, and set the value of the suboption in the vendor-specific information option. The behaviour of `DHCPServer.SendOption=` is then changed to reflect that of `DHCPv4.SendOption=`. It will set the value of the corresponding option in the DHCP request.
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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Copyright © 2013 Intel Corporation. All rights reserved.
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***/
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#include "sd-dhcp-server.h"
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#include "sd-event.h"
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#include "dhcp-internal.h"
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#include "hashmap.h"
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#include "log.h"
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#include "time-util.h"
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typedef enum DHCPRawOption {
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DHCP_RAW_OPTION_DATA_UINT8,
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DHCP_RAW_OPTION_DATA_UINT16,
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DHCP_RAW_OPTION_DATA_UINT32,
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DHCP_RAW_OPTION_DATA_STRING,
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DHCP_RAW_OPTION_DATA_IPV4ADDRESS,
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_DHCP_RAW_OPTION_DATA_MAX,
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_DHCP_RAW_OPTION_DATA_INVALID,
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} DHCPRawOption;
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typedef struct DHCPClientId {
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size_t length;
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void *data;
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} DHCPClientId;
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typedef struct DHCPLease {
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DHCPClientId client_id;
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be32_t address;
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be32_t gateway;
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uint8_t chaddr[16];
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usec_t expiration;
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} DHCPLease;
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struct sd_dhcp_server {
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unsigned n_ref;
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sd_event *event;
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int event_priority;
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sd_event_source *receive_message;
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int fd;
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int fd_raw;
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int ifindex;
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be32_t address;
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be32_t netmask;
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be32_t subnet;
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uint32_t pool_offset;
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uint32_t pool_size;
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char *timezone;
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struct in_addr *ntp, *dns, *sip;
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unsigned n_ntp, n_dns, n_sip;
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OrderedHashmap *extra_options;
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OrderedHashmap *vendor_options;
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bool emit_router;
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Hashmap *leases_by_client_id;
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DHCPLease **bound_leases;
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DHCPLease invalid_lease;
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uint32_t max_lease_time, default_lease_time;
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};
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typedef struct DHCPRequest {
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/* received message */
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DHCPMessage *message;
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/* options */
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DHCPClientId client_id;
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size_t max_optlen;
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be32_t server_id;
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be32_t requested_ip;
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uint32_t lifetime;
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} DHCPRequest;
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#define log_dhcp_server(client, fmt, ...) log_internal(LOG_DEBUG, 0, PROJECT_FILE, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__)
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#define log_dhcp_server_errno(client, error, fmt, ...) log_internal(LOG_DEBUG, error, PROJECT_FILE, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__)
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int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
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size_t length);
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int dhcp_server_send_packet(sd_dhcp_server *server,
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DHCPRequest *req, DHCPPacket *packet,
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int type, size_t optoffset);
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void client_id_hash_func(const DHCPClientId *p, struct siphash *state);
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int client_id_compare_func(const DHCPClientId *a, const DHCPClientId *b);
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