projects / systemd.git / blame
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|---|---|---|
| e842803a MB |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| 2 | ||
| 3 | /*** | |
| 4 | This file is part of systemd. | |
| 5 | ||
| 6 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
| 7 | Copyright (C) 2014 Tom Gundersen | |
| 8 | ||
| 9 | systemd is free software; you can redistribute it and/or modify it | |
| 10 | under the terms of the GNU Lesser General Public License as published by | |
| 11 | the Free Software Foundation; either version 2.1 of the License, or | |
| 12 | (at your option) any later version. | |
| 13 | ||
| 14 | systemd is distributed in the hope that it will be useful, but | |
| 15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 | Lesser General Public License for more details. | |
| 18 | ||
| 19 | You should have received a copy of the GNU Lesser General Public License | |
| 20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
| 21 | ***/ | |
| 22 | ||
| 23 | #include "sd-event.h" | |
| 24 | #include "sd-dhcp-server.h" | |
| 25 | ||
| 26 | #include "hashmap.h" | |
| 27 | #include "refcnt.h" | |
| 28 | #include "util.h" | |
| 29 | #include "log.h" | |
| 30 | ||
| 31 | #include "dhcp-internal.h" | |
| 32 | ||
| 33 | typedef struct DHCPClientId { | |
| 34 | size_t length; | |
| 35 | uint8_t *data; | |
| 36 | } DHCPClientId; | |
| 37 | ||
| 38 | typedef struct DHCPLease { | |
| 39 | DHCPClientId client_id; | |
| 40 | ||
| 41 | be32_t address; | |
| 5eef597e MP |
42 | be32_t gateway; |
| 43 | uint8_t chaddr[16]; | |
| e842803a MB |
44 | usec_t expiration; |
| 45 | } DHCPLease; | |
| 46 | ||
| 47 | struct sd_dhcp_server { | |
| 48 | RefCount n_ref; | |
| 49 | ||
| 50 | sd_event *event; | |
| 51 | int event_priority; | |
| 52 | sd_event_source *receive_message; | |
| 53 | int fd; | |
| 54 | int fd_raw; | |
| 55 | ||
| 56 | int index; | |
| 57 | be32_t address; | |
| 5eef597e | 58 | be32_t netmask; |
| e842803a MB |
59 | be32_t pool_start; |
| 60 | size_t pool_size; | |
| 61 | size_t next_offer; | |
| 62 | ||
| 63 | Hashmap *leases_by_client_id; | |
| 64 | DHCPLease **bound_leases; | |
| 65 | }; | |
| 66 | ||
| 67 | typedef struct DHCPRequest { | |
| 68 | /* received message */ | |
| 69 | DHCPMessage *message; | |
| 70 | ||
| 71 | /* options */ | |
| 72 | DHCPClientId client_id; | |
| 73 | size_t max_optlen; | |
| 74 | be32_t server_id; | |
| 75 | be32_t requested_ip; | |
| 76 | int lifetime; | |
| 77 | } DHCPRequest; | |
| 78 | ||
| 79 | DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_server*, sd_dhcp_server_unref); | |
| 80 | #define _cleanup_dhcp_server_unref_ _cleanup_(sd_dhcp_server_unrefp) | |
| 81 | ||
| 82 | #define log_dhcp_server(client, fmt, ...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__) | |
| 83 | ||
| 84 | int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message, | |
| 85 | size_t length); | |
| 86 | int dhcp_server_send_packet(sd_dhcp_server *server, | |
| 87 | DHCPRequest *req, DHCPPacket *packet, | |
| 88 | int type, size_t optoffset); | |
| 89 | ||
| 90 | unsigned long client_id_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]); | |
| 91 | int client_id_compare_func(const void *_a, const void *_b); |