/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
+ Copyright (C) Dean Camera, 2015.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2015 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
- The author disclaim all warranties with regard to this
+ The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
this software.
*/
-#if defined(ENABLE_DHCP_CLIENT) || defined(__DOXYGEN__)
-
/** \file
*
* DHCP Client Application. When connected to the uIP stack, this will retrieve IP configuration settings from the
#define INCLUDE_FROM_DHCPCLIENTAPP_C
#include "DHCPClientApp.h"
+#if defined(ENABLE_DHCP_CLIENT) || defined(__DOXYGEN__)
+
/** Initialization function for the DHCP client. */
void DHCPClientApp_Init(void)
{
/* Create a new UDP connection to the DHCP server port for the DHCP solicitation */
- struct uip_udp_conn* Connection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCPC_SERVER_PORT));
+ struct uip_udp_conn* Connection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCP_SERVER_PORT));
/* If the connection was successfully created, bind it to the local DHCP client port */
if (Connection != NULL)
{
uip_udp_appstate_t* const AppState = &Connection->appstate;
- uip_udp_bind(Connection, HTONS(DHCPC_CLIENT_PORT));
+ uip_udp_bind(Connection, HTONS(DHCP_CLIENT_PORT));
/* Set the initial client state */
AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
/* Add the required DHCP options list to the packet */
uint8_t RequiredOptionList[] = {DHCP_OPTION_SUBNET_MASK, DHCP_OPTION_ROUTER, DHCP_OPTION_DNS_SERVER};
- AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_REQ_LIST, sizeof(RequiredOptionList),
- RequiredOptionList);
+ AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_REQ_LIST, sizeof(RequiredOptionList),
+ RequiredOptionList);
/* Send the DHCP DISCOVER packet */
uip_udp_send(AppDataSize);
uint8_t OfferResponse_MessageType;
if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &OfferResponse_MessageType) &&
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &OfferResponse_MessageType) &&
(OfferResponse_MessageType == DHCP_OFFER))
{
/* Received a DHCP offer for an IP address, copy over values for later request */
memcpy(&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, &AppData->YourIP, sizeof(uip_ipaddr_t));
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK, &AppState->DHCPClient.DHCPOffer_Data.Netmask);
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_ROUTER, &AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_SERVER_ID, &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK, &AppState->DHCPClient.DHCPOffer_Data.Netmask);
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_ROUTER, &AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_SERVER_ID, &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
timer_reset(&AppState->DHCPClient.Timeout);
AppState->DHCPClient.CurrentState = DHCP_STATE_SendRequest;
AppDataSize += DHCPClientApp_FillDHCPHeader(AppData, DHCP_REQUEST, AppState);
/* Add the DHCP REQUESTED IP ADDRESS option to the packet */
- AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_REQ_IPADDR, sizeof(uip_ipaddr_t),
- &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
+ AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_REQ_IPADDR, sizeof(uip_ipaddr_t),
+ &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
/* Add the DHCP SERVER IP ADDRESS option to the packet */
- AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_SERVER_ID, sizeof(uip_ipaddr_t),
- &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
+ AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_SERVER_ID, sizeof(uip_ipaddr_t),
+ &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
/* Send the DHCP REQUEST packet */
uip_udp_send(AppDataSize);
uint8_t RequestResponse_MessageType;
if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
(RequestResponse_MessageType == DHCP_ACK))
{
/* Set the new network parameters from the DHCP server */
uip_setnetmask((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.Netmask);
uip_setdraddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
- /* Indicate to the user that we now have a valid IP configuration */
- HaveIPConfiguration = true;
-
AppState->DHCPClient.CurrentState = DHCP_STATE_AddressLeased;
}
return (sizeof(DHCP_Header_t) + 4);
}
-/** Sets the given DHCP option in the DHCP packet's option list. This automatically moves the
- * end of options terminator past the new option in the options list.
- *
- * \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
- * \param[in] Option DHCP option to add to the list
- * \param[in] DataLen Size in bytes of the option data to add
- * \param[in] OptionData Buffer where the option's data is to be sourced from
- *
- * \return Number of bytes added to the DHCP packet
- */
-static uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList,
- const uint8_t Option,
- const uint8_t DataLen,
- void* const OptionData)
-{
- /* Skip through the DHCP options list until the terminator option is found */
- while (*DHCPOptionList != DHCP_OPTION_END)
- DHCPOptionList += (DHCPOptionList[1] + 2);
-
- /* Overwrite the existing terminator with the new option, add a new terminator at the end of the list */
- DHCPOptionList[0] = Option;
- DHCPOptionList[1] = DataLen;
- memcpy(&DHCPOptionList[2], OptionData, DataLen);
- DHCPOptionList[2 + DataLen] = DHCP_OPTION_END;
-
- /* Calculate the total number of bytes added to the outgoing packet */
- return (2 + DataLen);
-}
-
-/** Retrieves the given option's data (if present) from the DHCP packet's options list.
- *
- * \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
- * \param[in] Option DHCP option to retrieve to the list
- * \param[out] Destination Buffer where the option's data is to be written to if found
- *
- * \return Boolean true if the option was found in the DHCP packet's options list, false otherwise
- */
-static bool DHCPClientApp_GetOption(const uint8_t* DHCPOptionList,
- const uint8_t Option,
- void* const Destination)
-{
- /* Look through the incoming DHCP packet's options list for the requested option */
- while (*DHCPOptionList != DHCP_OPTION_END)
- {
- /* Check if the current DHCP option in the packet is the one requested */
- if (DHCPOptionList[0] == Option)
- {
- /* Copy request option's data to the destination buffer */
- memcpy(Destination, &DHCPOptionList[2], DHCPOptionList[1]);
-
- /* Indicate that the requested option data was successfully retrieved */
- return true;
- }
-
- /* Skip to next DHCP option in the options list */
- DHCPOptionList += (DHCPOptionList[1] + 2);
- }
-
- /* Requested option not found in the incoming packet's DHCP options list */
- return false;
-}
#endif
projects / pub / USBasp.git / blobdiff