diff options
Diffstat (limited to 'lib/lufa/Projects/Webserver/Lib/DHCPCommon.c')
| -rw-r--r-- | lib/lufa/Projects/Webserver/Lib/DHCPCommon.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/lib/lufa/Projects/Webserver/Lib/DHCPCommon.c b/lib/lufa/Projects/Webserver/Lib/DHCPCommon.c deleted file mode 100644 index 6d80f65ca..000000000 --- a/lib/lufa/Projects/Webserver/Lib/DHCPCommon.c +++ /dev/null | |||
| @@ -1,103 +0,0 @@ | |||
| 1 | /* | ||
| 2 | LUFA Library | ||
| 3 | Copyright (C) Dean Camera, 2017. | ||
| 4 | |||
| 5 | dean [at] fourwalledcubicle [dot] com | ||
| 6 | www.lufa-lib.org | ||
| 7 | */ | ||
| 8 | |||
| 9 | /* | ||
| 10 | Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) | ||
| 11 | |||
| 12 | Permission to use, copy, modify, distribute, and sell this | ||
| 13 | software and its documentation for any purpose is hereby granted | ||
| 14 | without fee, provided that the above copyright notice appear in | ||
| 15 | all copies and that both that the copyright notice and this | ||
| 16 | permission notice and warranty disclaimer appear in supporting | ||
| 17 | documentation, and that the name of the author not be used in | ||
| 18 | advertising or publicity pertaining to distribution of the | ||
| 19 | software without specific, written prior permission. | ||
| 20 | |||
| 21 | The author disclaims all warranties with regard to this | ||
| 22 | software, including all implied warranties of merchantability | ||
| 23 | and fitness. In no event shall the author be liable for any | ||
| 24 | special, indirect or consequential damages or any damages | ||
| 25 | whatsoever resulting from loss of use, data or profits, whether | ||
| 26 | in an action of contract, negligence or other tortious action, | ||
| 27 | arising out of or in connection with the use or performance of | ||
| 28 | this software. | ||
| 29 | */ | ||
| 30 | |||
| 31 | /** \file | ||
| 32 | * | ||
| 33 | * Common DHCP routines to manage DHCP packet data. | ||
| 34 | */ | ||
| 35 | |||
| 36 | #include "DHCPCommon.h" | ||
| 37 | |||
| 38 | #if defined(ENABLE_DHCP_CLIENT) || defined(ENABLE_DHCP_SERVER) || defined(__DOXYGEN__) | ||
| 39 | |||
| 40 | /** Sets the given DHCP option in the DHCP packet's option list. This automatically moves the | ||
| 41 | * end of options terminator past the new option in the options list. | ||
| 42 | * | ||
| 43 | * \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list | ||
| 44 | * \param[in] Option DHCP option to add to the list | ||
| 45 | * \param[in] DataLen Size in bytes of the option data to add | ||
| 46 | * \param[in] OptionData Buffer where the option's data is to be sourced from | ||
| 47 | * | ||
| 48 | * \return Number of bytes added to the DHCP packet | ||
| 49 | */ | ||
| 50 | uint8_t DHCPCommon_SetOption(uint8_t* DHCPOptionList, | ||
| 51 | const uint8_t Option, | ||
| 52 | const uint8_t DataLen, | ||
| 53 | void* const OptionData) | ||
| 54 | { | ||
| 55 | /* Skip through the DHCP options list until the terminator option is found */ | ||
| 56 | while (*DHCPOptionList != DHCP_OPTION_END) | ||
| 57 | DHCPOptionList += (DHCPOptionList[1] + 2); | ||
| 58 | |||
| 59 | /* Overwrite the existing terminator with the new option, add a new terminator at the end of the list */ | ||
| 60 | DHCPOptionList[0] = Option; | ||
| 61 | DHCPOptionList[1] = DataLen; | ||
| 62 | memcpy(&DHCPOptionList[2], OptionData, DataLen); | ||
| 63 | DHCPOptionList[2 + DataLen] = DHCP_OPTION_END; | ||
| 64 | |||
| 65 | /* Calculate the total number of bytes added to the outgoing packet */ | ||
| 66 | return (2 + DataLen); | ||
| 67 | } | ||
| 68 | |||
| 69 | /** Retrieves the given option's data (if present) from the DHCP packet's options list. | ||
| 70 | * | ||
| 71 | * \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list | ||
| 72 | * \param[in] Option DHCP option to retrieve to the list | ||
| 73 | * \param[out] Destination Buffer where the option's data is to be written to if found | ||
| 74 | * | ||
| 75 | * \return Boolean \c true if the option was found in the DHCP packet's options list, \c false otherwise | ||
| 76 | */ | ||
| 77 | bool DHCPCommon_GetOption(const uint8_t* DHCPOptionList, | ||
| 78 | const uint8_t Option, | ||
| 79 | void* const Destination) | ||
| 80 | { | ||
| 81 | /* Look through the incoming DHCP packet's options list for the requested option */ | ||
| 82 | while (*DHCPOptionList != DHCP_OPTION_END) | ||
| 83 | { | ||
| 84 | /* Check if the current DHCP option in the packet is the one requested */ | ||
| 85 | if (DHCPOptionList[0] == Option) | ||
| 86 | { | ||
| 87 | /* Copy request option's data to the destination buffer */ | ||
| 88 | memcpy(Destination, &DHCPOptionList[2], DHCPOptionList[1]); | ||
| 89 | |||
| 90 | /* Indicate that the requested option data was successfully retrieved */ | ||
| 91 | return true; | ||
| 92 | } | ||
| 93 | |||
| 94 | /* Skip to next DHCP option in the options list */ | ||
| 95 | DHCPOptionList += (DHCPOptionList[1] + 2); | ||
| 96 | } | ||
| 97 | |||
| 98 | /* Requested option not found in the incoming packet's DHCP options list */ | ||
| 99 | return false; | ||
| 100 | } | ||
| 101 | |||
| 102 | #endif | ||
| 103 | |||
