X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/16ea5aa7a2e5f326f8ff129e740a19bb3fb7829f..refs/heads/master:/Projects/Webserver/Lib/DHCPClientApp.c?ds=inline
diff --git a/Projects/Webserver/Lib/DHCPClientApp.c b/Projects/Webserver/Lib/DHCPClientApp.c
index 79170fabe..d73839abc 100644
--- a/Projects/Webserver/Lib/DHCPClientApp.c
+++ b/Projects/Webserver/Lib/DHCPClientApp.c
@@ -1,263 +1,208 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 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
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim 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
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * DHCP Client Application. When connected to the uIP stack, this will retrieve IP configuration settings from the
- * DHCP server on the network.
- */
-
-#include "DHCPClientApp.h"
-
-#if defined(ENABLE_DHCP) || defined(__DOXYGEN__)
-/** Timer for managing the timeout period for a DHCP server to respond */
-struct timer DHCPTimer;
-
-/** Initialization function for the DHCP client. */
-void DHCPClientApp_Init(void)
-{
- uip_udp_appstate_t* const AppState = &uip_udp_conn->appstate;
-
- /* Create a new UDP connection to the DHCP server port for the DHCP solicitation */
- uip_ipaddr_t DHCPServerIPAddress;
- uip_ipaddr(&DHCPServerIPAddress, 255, 255, 255, 255);
- AppState->DHCPClient.Connection = uip_udp_new(&DHCPServerIPAddress, HTONS(DHCPC_SERVER_PORT));
-
- /* If the connection was sucessfully created, bind it to the local DHCP client port */
- if(AppState->DHCPClient.Connection != NULL)
- {
- uip_udp_bind(AppState->DHCPClient.Connection, HTONS(DHCPC_CLIENT_PORT));
- AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
- }
-
- /* Set timeout period to half a second for a DHCP server to respond */
- timer_set(&DHCPTimer, CLOCK_SECOND / 2);
-}
-
-/** uIP stack application callback for the DHCP client. This function must be called each time the TCP/IP stack
- * needs a UDP packet to be processed.
- */
-void DHCPClientApp_Callback(void)
-{
- uip_udp_appstate_t* const AppState = &uip_udp_conn->appstate;
- DHCP_Header_t* const AppData = (DHCP_Header_t*)uip_appdata;
- uint16_t AppDataSize = 0;
-
- switch (AppState->DHCPClient.CurrentState)
- {
- case DHCP_STATE_SendDiscover:
- /* Clear all DHCP settings, reset client IP address */
- memset(&AppState->DHCPClient.DHCPOffer_Data, 0x00, sizeof(AppState->DHCPClient.DHCPOffer_Data));
- uip_sethostaddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
-
- /* Fill out the DHCP response header */
- AppDataSize += DHCPClientApp_FillDHCPHeader(AppData, DHCP_DISCOVER, AppState);
-
- /* 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);
-
- /* Send the DHCP DISCOVER packet */
- uip_udp_send(AppDataSize);
-
- /* Reset the timeout timer, progress to next state */
- timer_reset(&DHCPTimer);
- AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForOffer;
-
- break;
- case DHCP_STATE_WaitForOffer:
- if (!(uip_newdata()))
- {
- /* Check if the DHCP timeout period has expired while waiting for a response */
- if (timer_expired(&DHCPTimer))
- AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
-
- break;
- }
-
- uint8_t OfferResponse_MessageType;
- if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
- DHCPClientApp_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);
-
- timer_reset(&DHCPTimer);
- AppState->DHCPClient.CurrentState = DHCP_STATE_SendRequest;
- }
-
- break;
- case DHCP_STATE_SendRequest:
- /* Fill out the DHCP response header */
- 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);
-
- /* 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);
-
- /* Send the DHCP REQUEST packet */
- uip_udp_send(AppDataSize);
-
- /* Reset the timeout timer, progress to next state */
- timer_reset(&DHCPTimer);
- AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForACK;
-
- break;
- case DHCP_STATE_WaitForACK:
- if (!(uip_newdata()))
- {
- /* Check if the DHCP timeout period has expired while waiting for a response */
- if (timer_expired(&DHCPTimer))
- AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
-
- break;
- }
-
- uint8_t RequestResponse_MessageType;
- if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
- DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
- (RequestResponse_MessageType == DHCP_ACK))
- {
- /* Set the new network parameters from the DHCP server */
- uip_sethostaddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
- uip_setnetmask((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.Netmask);
- uip_setdraddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
-
- AppState->DHCPClient.CurrentState = DHCP_STATE_AddressLeased;
- }
-
- break;
- }
-}
-
-/** Fills the DHCP packet response with the appropriate BOOTP header for DHCP. This fills out all the required
- * fields, leaving only the additional DHCP options to be added to the packet before it is sent to the DHCP server.
- *
- * \param[out] DHCPHeader Location in the packet buffer where the BOOTP header should be written to
- * \param[in] DHCPMessageType DHCP Message type, such as DHCP_DISCOVER
- * \param[in] AppState Application state of the current UDP connection
- *
- * \return Size in bytes of the created DHCP packet
- */
-uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* DHCPHeader, uint8_t DHCPMessageType, uip_udp_appstate_t* AppState)
-{
- /* Erase existing packet data so that we start will all 0x00 DHCP header data */
- memset(DHCPHeader, 0, sizeof(DHCP_Header_t));
-
- /* Fill out the DHCP packet header */
- DHCPHeader->Operation = DHCP_OP_BOOTREQUEST;
- DHCPHeader->HardwareType = DHCP_HTYPE_ETHERNET;
- DHCPHeader->HardwareAddressLength = sizeof(MACAddress);
- DHCPHeader->Hops = 0;
- DHCPHeader->TransactionID = DHCP_TRANSACTION_ID;
- DHCPHeader->ElapsedSeconds = 0;
- DHCPHeader->Flags = HTONS(BOOTP_BROADCAST);
- memcpy(&DHCPHeader->ClientIP, &uip_hostaddr, sizeof(uip_ipaddr_t));
- memcpy(&DHCPHeader->YourIP, &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, sizeof(uip_ipaddr_t));
- memcpy(&DHCPHeader->NextServerIP, &AppState->DHCPClient.DHCPOffer_Data.ServerIP, sizeof(uip_ipaddr_t));
- memcpy(&DHCPHeader->ClientHardwareAddress, &MACAddress, sizeof(struct uip_eth_addr));
- DHCPHeader->Cookie = DHCP_MAGIC_COOKIE;
-
- /* Add a DHCP type and terminator options to the start of the DHCP options field */
- DHCPHeader->Options[0] = DHCP_OPTION_MSG_TYPE;
- DHCPHeader->Options[1] = 1;
- DHCPHeader->Options[2] = DHCPMessageType;
- DHCPHeader->Options[3] = DHCP_OPTION_END;
-
- /* Calculate the total number of bytes added to the outgoing packet */
- 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
- */
-uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList, uint8_t Option, uint8_t DataLen, void* 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
- */
-bool DHCPClientApp_GetOption(uint8_t* DHCPOptionList, uint8_t Option, void* Destination)
-{
- /* Look through the incomming 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 sucessfully retrieved */
- return true;
- }
-
- /* Skip to next DHCP option in the options list */
- DHCPOptionList += (DHCPOptionList[1] + 2);
- }
-
- /* Requested option not found in the incomming packet's DHCP options list */
- return false;
-}
-#endif
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2021.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2021 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
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ 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
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * DHCP Client Application. When connected to the uIP stack, this will retrieve IP configuration settings from the
+ * DHCP server on the network.
+ */
+
+#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(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(DHCP_CLIENT_PORT));
+
+ /* Set the initial client state */
+ AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
+
+ /* Set timeout period to half a second for a DHCP server to respond */
+ timer_set(&AppState->DHCPClient.Timeout, CLOCK_SECOND / 2);
+ }
+}
+
+/** uIP stack application callback for the DHCP client. This function must be called each time the TCP/IP stack
+ * needs a UDP packet to be processed.
+ */
+void DHCPClientApp_Callback(void)
+{
+ uip_udp_appstate_t* const AppState = &uip_udp_conn->appstate;
+ DHCP_Header_t* const AppData = (DHCP_Header_t*)uip_appdata;
+ uint16_t AppDataSize = 0;
+
+ switch (AppState->DHCPClient.CurrentState)
+ {
+ case DHCP_STATE_SendDiscover:
+ /* Clear all DHCP settings, reset client IP address */
+ memset(&AppState->DHCPClient.DHCPOffer_Data, 0x00, sizeof(AppState->DHCPClient.DHCPOffer_Data));
+ uip_sethostaddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
+
+ /* Fill out the DHCP response header */
+ AppDataSize += DHCPClientApp_FillDHCPHeader(AppData, DHCP_DISCOVER, AppState);
+
+ /* Add the required DHCP options list to the packet */
+ uint8_t RequiredOptionList[] = {DHCP_OPTION_SUBNET_MASK, DHCP_OPTION_ROUTER, DHCP_OPTION_DNS_SERVER};
+ AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_REQ_LIST, sizeof(RequiredOptionList),
+ RequiredOptionList);
+
+ /* Send the DHCP DISCOVER packet */
+ uip_udp_send(AppDataSize);
+
+ /* Reset the timeout timer, progress to next state */
+ timer_reset(&AppState->DHCPClient.Timeout);
+ AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForOffer;
+
+ break;
+ case DHCP_STATE_WaitForOffer:
+ if (!(uip_newdata()))
+ {
+ /* Check if the DHCP timeout period has expired while waiting for a response */
+ if (timer_expired(&AppState->DHCPClient.Timeout))
+ AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
+
+ break;
+ }
+
+ uint8_t OfferResponse_MessageType;
+ if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
+ 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));
+ 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;
+ }
+
+ break;
+ case DHCP_STATE_SendRequest:
+ /* Fill out the DHCP response header */
+ AppDataSize += DHCPClientApp_FillDHCPHeader(AppData, DHCP_REQUEST, AppState);
+
+ /* Add the DHCP REQUESTED IP ADDRESS option to the packet */
+ 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 += 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);
+
+ /* Reset the timeout timer, progress to next state */
+ timer_reset(&AppState->DHCPClient.Timeout);
+ AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForACK;
+
+ break;
+ case DHCP_STATE_WaitForACK:
+ if (!(uip_newdata()))
+ {
+ /* Check if the DHCP timeout period has expired while waiting for a response */
+ if (timer_expired(&AppState->DHCPClient.Timeout))
+ AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
+
+ break;
+ }
+
+ uint8_t RequestResponse_MessageType;
+ if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
+ DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
+ (RequestResponse_MessageType == DHCP_ACK))
+ {
+ /* Set the new network parameters from the DHCP server */
+ uip_sethostaddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
+ uip_setnetmask((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.Netmask);
+ uip_setdraddr((uip_ipaddr_t*)&AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
+
+ AppState->DHCPClient.CurrentState = DHCP_STATE_AddressLeased;
+ }
+
+ break;
+ }
+}
+
+/** Fills the DHCP packet response with the appropriate BOOTP header for DHCP. This fills out all the required
+ * fields, leaving only the additional DHCP options to be added to the packet before it is sent to the DHCP server.
+ *
+ * \param[out] DHCPHeader Location in the packet buffer where the BOOTP header should be written to
+ * \param[in] DHCPMessageType DHCP Message type, such as DHCP_DISCOVER
+ * \param[in] AppState Application state of the current UDP connection
+ *
+ * \return Size in bytes of the created DHCP packet
+ */
+static uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* const DHCPHeader,
+ const uint8_t DHCPMessageType,
+ uip_udp_appstate_t* const AppState)
+{
+ /* Erase existing packet data so that we start will all 0x00 DHCP header data */
+ memset(DHCPHeader, 0, sizeof(DHCP_Header_t));
+
+ /* Fill out the DHCP packet header */
+ DHCPHeader->Operation = DHCP_OP_BOOTREQUEST;
+ DHCPHeader->HardwareType = DHCP_HTYPE_ETHERNET;
+ DHCPHeader->HardwareAddressLength = sizeof(MACAddress);
+ DHCPHeader->Hops = 0;
+ DHCPHeader->TransactionID = DHCP_TRANSACTION_ID;
+ DHCPHeader->ElapsedSeconds = 0;
+ DHCPHeader->Flags = HTONS(BOOTP_BROADCAST);
+ memcpy(&DHCPHeader->ClientIP, &uip_hostaddr, sizeof(uip_ipaddr_t));
+ memcpy(&DHCPHeader->YourIP, &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, sizeof(uip_ipaddr_t));
+ memcpy(&DHCPHeader->NextServerIP, &AppState->DHCPClient.DHCPOffer_Data.ServerIP, sizeof(uip_ipaddr_t));
+ memcpy(&DHCPHeader->ClientHardwareAddress, &MACAddress, sizeof(struct uip_eth_addr));
+ DHCPHeader->Cookie = DHCP_MAGIC_COOKIE;
+
+ /* Add a DHCP message type and terminator options to the start of the DHCP options field */
+ DHCPHeader->Options[0] = DHCP_OPTION_MSG_TYPE;
+ DHCPHeader->Options[1] = 1;
+ DHCPHeader->Options[2] = DHCPMessageType;
+ DHCPHeader->Options[3] = DHCP_OPTION_END;
+
+ /* Calculate the total number of bytes added to the outgoing packet */
+ return (sizeof(DHCP_Header_t) + 4);
+}
+
+#endif
+