115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
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/**
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* @file BDHCPClientCore.h
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* DHCP client, excluding system-dependent details.
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*/
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#ifndef BADVPN_DHCPCLIENT_BDHCPCLIENTCORE_H
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#define BADVPN_DHCPCLIENT_BDHCPCLIENTCORE_H
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#include <stdint.h>
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#include <stddef.h>
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#include <system/BReactor.h>
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#include <base/DebugObject.h>
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#include <random/BRandom2.h>
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#include <flow/PacketPassInterface.h>
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#include <flow/PacketRecvInterface.h>
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#define BDHCPCLIENTCORE_EVENT_UP 1
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#define BDHCPCLIENTCORE_EVENT_DOWN 2
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#define BDHCPCLIENTCORE_MAX_DOMAIN_NAME_SERVERS 16
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typedef void (*BDHCPClientCore_func_getsendermac) (void *user, uint8_t *out_mac);
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typedef void (*BDHCPClientCore_handler) (void *user, int event);
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struct BDHCPClientCore_opts {
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const char *hostname;
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const char *vendorclassid;
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const uint8_t *clientid;
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size_t clientid_len;
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};
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typedef struct {
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PacketPassInterface *send_if;
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PacketRecvInterface *recv_if;
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uint8_t client_mac_addr[6];
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BReactor *reactor;
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BRandom2 *random2;
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void *user;
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BDHCPClientCore_func_getsendermac func_getsendermac;
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BDHCPClientCore_handler handler;
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char *hostname;
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char *vendorclassid;
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uint8_t *clientid;
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size_t clientid_len;
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char *send_buf;
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char *recv_buf;
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int sending;
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BTimer reset_timer;
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BTimer request_timer;
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BTimer renew_timer;
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BTimer renew_request_timer;
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BTimer lease_timer;
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int state;
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int request_count;
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uint32_t xid;
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int xid_reuse_counter;
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struct {
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uint32_t yiaddr;
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uint32_t dhcp_server_identifier;
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} offered;
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struct {
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uint32_t ip_address_lease_time;
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uint32_t subnet_mask;
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int have_router;
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uint32_t router;
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int domain_name_servers_count;
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uint32_t domain_name_servers[BDHCPCLIENTCORE_MAX_DOMAIN_NAME_SERVERS];
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uint8_t server_mac[6];
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} acked;
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DebugObject d_obj;
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} BDHCPClientCore;
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int BDHCPClientCore_Init (BDHCPClientCore *o, PacketPassInterface *send_if, PacketRecvInterface *recv_if,
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uint8_t *client_mac_addr, struct BDHCPClientCore_opts opts, BReactor *reactor,
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BRandom2 *random2, void *user,
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BDHCPClientCore_func_getsendermac func_getsendermac,
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BDHCPClientCore_handler handler);
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void BDHCPClientCore_Free (BDHCPClientCore *o);
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void BDHCPClientCore_GetClientIP (BDHCPClientCore *o, uint32_t *out_ip);
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void BDHCPClientCore_GetClientMask (BDHCPClientCore *o, uint32_t *out_mask);
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int BDHCPClientCore_GetRouter (BDHCPClientCore *o, uint32_t *out_router);
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int BDHCPClientCore_GetDNS (BDHCPClientCore *o, uint32_t *out_dns_servers, size_t max_dns_servers);
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void BDHCPClientCore_GetServerMAC (BDHCPClientCore *o, uint8_t *out_mac);
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#endif
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