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dhcp_server.h File Reference
Data Structures | Functions

dhcp_server.h File Reference

DHCP server (Dynamic Host Configuration Protocol) More...

Go to the source code of this file.

Data Structures

struct  DhcpServerBinding
 DHCP binding. More...
struct  DhcpServerSettings
 DHCP server settings. More...
struct  DhcpServerContext
 DHCP server context. More...

Functions

void dhcpServerGetDefaultSettings (DhcpServerSettings *settings)
 Initialize settings with default values.
error_t dhcpServerInit (DhcpServerContext *context, const DhcpServerSettings *settings)
 DHCP server initialization.
error_t dhcpServerStart (DhcpServerContext *context)
 Start DHCP server.
error_t dhcpServerStop (DhcpServerContext *context)
 Stop DHCP server.
void dhcpServerTick (DhcpServerContext *context)
 DHCP server timer handler.
void dhcpServerProcessMessage (NetInterface *interface, const IpPseudoHeader *pseudoHeader, const UdpHeader *udpHeader, const NetBuffer *buffer, size_t offset, void *params)
 Process incoming DHCP message.
void dhcpServerParseDiscover (DhcpServerContext *context, const DhcpMessage *message, size_t length)
 Parse DHCPDISCOVER message.
void dhcpServerParseRequest (DhcpServerContext *context, const DhcpMessage *message, size_t length)
 Parse DHCPREQUEST message.
void dhcpServerParseDecline (DhcpServerContext *context, const DhcpMessage *message, size_t length)
 Parse DHCPDECLINE message.
void dhcpServerParseRelease (DhcpServerContext *context, const DhcpMessage *message, size_t length)
 Parse DHCPRELEASE message.
void dhcpServerParseInform (DhcpServerContext *context, const DhcpMessage *message, size_t length)
 Parse DHCPINFORM message.
error_t dhcpServerSendReply (DhcpServerContext *context, uint8_t type, Ipv4Addr yourIpAddr, const DhcpMessage *request, size_t length)
 Send DHCP reply message.
DhcpServerBinding * dhcpServerCreateBinding (DhcpServerContext *context)
 Create a new binding.
DhcpServerBinding * dhcpServerFindBindingByMacAddr (DhcpServerContext *context, const MacAddr *macAddr)
 Search the list of bindings for a given MAC address.
DhcpServerBinding * dhcpServerFindBindingByIpAddr (DhcpServerContext *context, Ipv4Addr ipAddr)
 Search the list of bindings for a given IP address.
error_t dhcpServerGetNextIpAddr (DhcpServerContext *context, Ipv4Addr *ipAddr)
 Retrieve the next IP address to be used.

Detailed Description

DHCP server (Dynamic Host Configuration Protocol)

License

Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author:
Oryx Embedded SARL (www.oryx-embedded.com)
Version:
1.7.6

Definition in file dhcp_server.h.

Function Documentation

DhcpServerBinding* dhcpServerCreateBinding ( DhcpServerContext *  context )

Create a new binding.

Parameters:
[in]contextPointer to the DHCP server context
Returns:
Pointer to the newly created binding

Definition at line 864 of file dhcp_server.c.

DhcpServerBinding* dhcpServerFindBindingByIpAddr ( DhcpServerContext *  context,
Ipv4Addr  ipAddr 
)

Search the list of bindings for a given IP address.

Parameters:
[in]contextPointer to the DHCP server context
[in]ipAddrIP address
Returns:
Pointer to the corresponding DHCP binding

Definition at line 961 of file dhcp_server.c.

DhcpServerBinding* dhcpServerFindBindingByMacAddr ( DhcpServerContext *  context,
const MacAddr *  macAddr 
)

Search the list of bindings for a given MAC address.

Parameters:
[in]contextPointer to the DHCP server context
[in]macAddrMAC address
Returns:
Pointer to the corresponding DHCP binding

Definition at line 925 of file dhcp_server.c.

void dhcpServerGetDefaultSettings ( DhcpServerSettings *  settings )

Initialize settings with default values.

Parameters:
[out]settingsStructure that contains DHCP server settings

Definition at line 52 of file dhcp_server.c.

error_t dhcpServerGetNextIpAddr ( DhcpServerContext *  context,
Ipv4Addr *  ipAddr 
)

Retrieve the next IP address to be used.

Parameters:
[in]contextPointer to the DHCP server context
[out]ipAddrNext IP address to be used
Returns:
Error code

Definition at line 997 of file dhcp_server.c.

error_t dhcpServerInit ( DhcpServerContext *  context,
const DhcpServerSettings *  settings 
)

DHCP server initialization.

Parameters:
[in]contextPointer to the DHCP server context
[in]settingsDHCP server specific settings
Returns:
Error code

Definition at line 87 of file dhcp_server.c.

void dhcpServerParseDecline ( DhcpServerContext *  context,
const DhcpMessage *  message,
size_t  length 
)

Parse DHCPDECLINE message.

Parameters:
[in]contextPointer to the DHCP server context
[in]messagePointer to the incoming DHCP message
[in]lengthLength of the incoming message to parse

Definition at line 590 of file dhcp_server.c.

void dhcpServerParseDiscover ( DhcpServerContext *  context,
const DhcpMessage *  message,
size_t  length 
)

Parse DHCPDISCOVER message.

Parameters:
[in]contextPointer to the DHCP server context
[in]messagePointer to the incoming DHCP message
[in]lengthLength of the incoming message to parse

Definition at line 346 of file dhcp_server.c.

void dhcpServerParseInform ( DhcpServerContext *  context,
const DhcpMessage *  message,
size_t  length 
)

Parse DHCPINFORM message.

Parameters:
[in]contextPointer to the DHCP server context
[in]messagePointer to the incoming DHCP message
[in]lengthLength of the incoming message to parse

Definition at line 658 of file dhcp_server.c.

void dhcpServerParseRelease ( DhcpServerContext *  context,
const DhcpMessage *  message,
size_t  length 
)

Parse DHCPRELEASE message.

Parameters:
[in]contextPointer to the DHCP server context
[in]messagePointer to the incoming DHCP message
[in]lengthLength of the incoming message to parse

Definition at line 630 of file dhcp_server.c.

void dhcpServerParseRequest ( DhcpServerContext *  context,
const DhcpMessage *  message,
size_t  length 
)

Parse DHCPREQUEST message.

Parameters:
[in]contextPointer to the DHCP server context
[in]messagePointer to the incoming DHCP message
[in]lengthLength of the incoming message to parse

Definition at line 473 of file dhcp_server.c.

void dhcpServerProcessMessage ( NetInterface *  interface,
const IpPseudoHeader *  pseudoHeader,
const UdpHeader *  udpHeader,
const NetBuffer *  buffer,
size_t  offset,
void *  params 
)

Process incoming DHCP message.

Parameters:
[in]interfaceUnderlying network interface
[in]pseudoHeaderUDP pseudo header
[in]udpHeaderUDP header
[in]bufferMulti-part buffer containing the incoming DHCP message
[in]offsetOffset to the first byte of the DHCP message
[in]paramsPointer to the DHCP server context

Definition at line 255 of file dhcp_server.c.

error_t dhcpServerSendReply ( DhcpServerContext *  context,
uint8_t  type,
Ipv4Addr  yourIpAddr,
const DhcpMessage *  request,
size_t  length 
)

Send DHCP reply message.

Parameters:
[in]contextPointer to the DHCP server context
[in]typeDHCP message type (DHCPOFFER, DHCPACK or DHCPNAK)
[in]yourIpAddrThe IP address to be placed in the 'yiaddr' field
[in]requestPointer to DHCP message received from the client
[in]lengthLength of the DHCP message received from the client
Returns:
Error code

Definition at line 682 of file dhcp_server.c.

error_t dhcpServerStart ( DhcpServerContext *  context )

Start DHCP server.

Parameters:
[in]contextPointer to the DHCP server context
Returns:
Error code

Definition at line 144 of file dhcp_server.c.

error_t dhcpServerStop ( DhcpServerContext *  context )

Stop DHCP server.

Parameters:
[in]contextPointer to the DHCP server context
Returns:
Error code

Definition at line 171 of file dhcp_server.c.

void dhcpServerTick ( DhcpServerContext *  context )

DHCP server timer handler.

This routine must be periodically called by the TCP/IP stack to manage DHCP server operation

Parameters:
[in]contextPointer to the DHCP server context

Definition at line 201 of file dhcp_server.c.

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