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Diffstat (limited to 'Projects/Webserver/Lib/DHCPCommon.c')
| -rw-r--r-- | Projects/Webserver/Lib/DHCPCommon.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/Projects/Webserver/Lib/DHCPCommon.c b/Projects/Webserver/Lib/DHCPCommon.c deleted file mode 100644 index 6d80f65cae..0000000000 --- a/Projects/Webserver/Lib/DHCPCommon.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 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 - * - * Common DHCP routines to manage DHCP packet data. - */ - -#include "DHCPCommon.h" - -#if defined(ENABLE_DHCP_CLIENT) || defined(ENABLE_DHCP_SERVER) || defined(__DOXYGEN__) - -/** 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 DHCPCommon_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 \c true if the option was found in the DHCP packet's options list, \c false otherwise - */ -bool DHCPCommon_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 - |