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Diffstat (limited to 'branches/1.0/tinyNET/src/dhcp/tnet_dhcp_message.c')
| -rw-r--r-- | branches/1.0/tinyNET/src/dhcp/tnet_dhcp_message.c | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/branches/1.0/tinyNET/src/dhcp/tnet_dhcp_message.c b/branches/1.0/tinyNET/src/dhcp/tnet_dhcp_message.c deleted file mode 100644 index e4eff3b..0000000 --- a/branches/1.0/tinyNET/src/dhcp/tnet_dhcp_message.c +++ /dev/null @@ -1,355 +0,0 @@ -/* -* Copyright (C) 2009-2010 Mamadou Diop. -* -* Contact: Mamadou Diop <diopmamadou(at)doubango.org> -* -* This file is part of Open Source Doubango Framework. -* -* DOUBANGO 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 3 of the License, or -* (at your option) any later version. -* -* DOUBANGO 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 DOUBANGO. -* -*/ -/**@file tnet_dhcp_message.c - * @brief DHCP Message as per RFC 2131 subclause 2. - * - * @author Mamadou Diop <diopmamadou(at)doubango.org> - * - * @date Created: Sat Nov 8 16:54:58 2009 mdiop - */ -#include "tnet_dhcp_message.h" -#include "tnet_dhcp.h" - -#include "../tnet_utils.h" -#include "../tnet_endianness.h" - -#include "tsk_time.h" -#include "tsk_memory.h" -#include "tsk_string.h" -#include "tsk_debug.h" - -#include <string.h> - -tnet_dhcp_message_t* tnet_dhcp_message_create(tnet_dhcp_message_op_t opcode) -{ - return tsk_object_new(tnet_dhcp_message_def_t, opcode); -} - -tnet_dhcp_request_t* tnet_dhcp_request_create() -{ - return tnet_dhcp_message_create(dhcp_op_bootrequest); -} - -tnet_dhcp_message_t* tnet_dhcp_reply_create() -{ - return tnet_dhcp_message_create(dhcp_op_bootreply); -} - -tsk_buffer_t* tnet_dhcp_message_serialize(const tnet_dhcp_ctx_t *ctx, const tnet_dhcp_message_t *message) -{ - tsk_buffer_t* output = 0; - uint8_t _1byte; - uint16_t _2bytes; - uint32_t _4bytes; - - /* Check message validity */ - if(!message){ - goto bail; - } - - output = tsk_buffer_create_null(); - - /*== OP HTYPE HLEN HOPS */ - _4bytes = (((uint32_t)(message->op)) << 24) | - (((uint32_t)(message->htype)) << 16) | - (((uint16_t)(message->hlen)) << 8) | message->hops; - _4bytes = tnet_ntohl(_4bytes); - tsk_buffer_append(output, &(_4bytes), 4); - - /*== XID */ - _4bytes = tnet_ntohl(message->xid); - tsk_buffer_append(output, &(_4bytes), 4); - /*== SECS */ - _2bytes = tnet_ntohs(message->secs); - tsk_buffer_append(output, &(_2bytes), 2); - /*== FLAGS */ - _2bytes = tnet_ntohs(message->flags); - tsk_buffer_append(output, &(_2bytes), 2); - /*== CIADDR */ - _4bytes = tnet_ntohl(message->ciaddr); - tsk_buffer_append(output, &(_4bytes), 4); - /*== YIADDR */ - _4bytes = tnet_ntohl(message->yiaddr); - tsk_buffer_append(output, &(_4bytes), 4); - /*== SIADDR */ - _4bytes = tnet_ntohl(message->siaddr); - tsk_buffer_append(output, &(_4bytes), 4); - /*== GIADDR */ - _4bytes = tnet_ntohl(message->giaddr); - tsk_buffer_append(output, &(_4bytes), 4); - /*== CHADDR */ - tsk_buffer_append(output, message->chaddr, sizeof(message->chaddr)); - /*== sname (unused) */ - tsk_buffer_append(output, message->sname, sizeof(message->sname)); - /*== file (unused) */ - tsk_buffer_append(output, message->file, sizeof(message->file)); - /*== Magic Cookie */ - _4bytes = tnet_ntohl(TNET_DHCP_MAGIC_COOKIE); - tsk_buffer_append(output, &(_4bytes), 4); - - /*== Message Type (option 53) - */ - tnet_dhcp_option_serializeex(dhcp_code_DHCP_Msg_Type, 1, &message->type, output); - - /*== Client Identifier (option 61) ==> RFC 2132 - 9.14. Client-identifier - Code Len Type Client-Identifier - +-----+-----+-----+-----+-----+--- - | 61 | n | t1 | i1 | i2 | ... - +-----+-----+-----+-----+-----+--- - */ - if(message->hlen){ - uint8_t client_id[17]; // 16 /*sizeof(chaddr)*/+ 1/*htype*/ - /*if(client_id)*/{ - client_id[0] = message->htype; - memcpy(&client_id[1], message->chaddr, message->hlen); - tnet_dhcp_option_serializeex(dhcp_code_Client_Id, (message->hlen+1), client_id, output); - } - } - /*== Host name(10) ==> RFC 2132 - 3.14. Host Name Option - Code Len Host Name - +-----+-----+-----+-----+-----+-----+-----+-----+-- - | 12 | n | h1 | h2 | h3 | h4 | h5 | h6 | ... - +-----+-----+-----+-----+-----+-----+-----+-----+-- - */ - if(TNET_DHCP_MESSAGE_IS_REQUEST(message) && ctx->hostname){ - tnet_dhcp_option_serializeex(dhcp_code_Hostname, tsk_strlen(ctx->hostname), ctx->hostname, output); - } - /*== Vendor classId(60) ==> RFC 2132 - 9.13. Vendor class identifier - Code Len Vendor class Identifier - +-----+-----+-----+-----+--- - | 60 | n | i1 | i2 | ... - +-----+-----+-----+-----+--- - */ - if(TNET_DHCP_MESSAGE_IS_REQUEST(message) && ctx->vendor_id){ - tnet_dhcp_option_serializeex(dhcp_code_Class_Id, tsk_strlen(ctx->vendor_id), ctx->vendor_id, output); - } - - /*== RFC 2132 - 9.10. Maximum DHCP Message Size (57) - Code Len Length - +-----+-----+-----+-----+ - | 57 | 2 | l1 | l2 | - +-----+-----+-----+-----+ - */ - if(TNET_DHCP_MESSAGE_IS_REQUEST(message) && ctx->max_msg_size){ - _2bytes = tnet_ntohs(ctx->max_msg_size); - tnet_dhcp_option_serializeex(dhcp_code_DHCP_Max_Msg_Size, 2, &_2bytes, output); - } - - /*== DHCP Options - */ - { - tsk_list_item_t *item; - tnet_dhcp_option_t* option; - tsk_list_foreach(item, message->options) - { - option = (tnet_dhcp_option_t*)item->data; - if(tnet_dhcp_option_serialize(option, output)){ - TSK_DEBUG_WARN("Failed to serialize DHCP OPTION (%u)", option->code); - } - } - } - - /* RFC 2131 - 4.1 Constructing and sending DHCP messages - The last option must always be the 'end' option. - */ - _1byte = dhcp_code_End; - tsk_buffer_append(output, &(_1byte), 1); - -bail: - return output; -} - -tnet_dhcp_message_t* tnet_dhcp_message_deserialize(const struct tnet_dhcp_ctx_s *ctx, const uint8_t *data, tsk_size_t size) -{ - tnet_dhcp_message_t *message = 0; - uint8_t *dataPtr, *dataEnd, *dataStart; - - if(!data || !size) - { - goto bail; - } - - if(size < TNET_DHCP_MESSAGE_MIN_SIZE){ - TSK_DEBUG_ERROR("DHCP message too short."); - goto bail; - } - - if(!(message = tnet_dhcp_reply_create())){ /* If REQUEST OP will be overridedden */ - TSK_DEBUG_ERROR("Failed to create new DHCP message."); - goto bail; - } - - dataPtr = (uint8_t*)data; - dataStart = dataPtr; - dataEnd = (dataStart + size); - - /*== op (1)*/ - message->op = *(dataPtr++); - /*== htype (1) */ - message->htype = *(dataPtr++); - /*== hlen (1) */ - message->hlen = *(dataPtr++); - /*== htype (1) */ - message->hops = *(dataPtr++); - /*== xid (4) */ - message->xid= tnet_htonl_2(dataPtr); - dataPtr += 4; - /*== secs (2) */ - message->secs = tnet_ntohs_2(dataPtr); - dataPtr += 2; - /*== flags (2) */ - message->flags = tnet_ntohs_2(dataPtr); - dataPtr += 2; - /*== ciaddr (4) */ - message->ciaddr= tnet_htonl_2(dataPtr); - dataPtr += 4; - /*== yiaddr (4) */ - message->yiaddr= tnet_htonl_2(dataPtr); - dataPtr += 4; - /*== siaddr (4) */ - message->siaddr= tnet_htonl_2(dataPtr); - dataPtr += 4; - /*== giaddr (4) */ - message->giaddr= tnet_htonl_2(dataPtr); - dataPtr += 4; - /*== chaddr (16[max]) */ - memcpy(message->chaddr, dataPtr, message->hlen>16 ? 16 : message->hlen); - dataPtr += 16; - /*== sname (64) */ - memcpy(message->sname, dataPtr, 64); - dataPtr += 64; - /*== file (128) */ - memcpy(message->file, dataPtr, 128); - dataPtr += 128; - /*== Magic Cookie (4) */ - if(tnet_htonl_2(dataPtr) != TNET_DHCP_MAGIC_COOKIE){ - TSK_DEBUG_ERROR("Invalid DHCP magic cookie."); - // Do not exit ==> continue parsing. - } - dataPtr += 4; - - /*== options (variable) */ - while(dataPtr<dataEnd && *dataPtr!=dhcp_code_End) - { - tnet_dhcp_option_t* option = tnet_dhcp_option_deserialize(dataPtr, (dataEnd-dataPtr)); - if(option && option->value){ - - if(option->code == dhcp_code_DHCP_Msg_Type){ - message->type = (tnet_dhcp_message_type_t)*TSK_BUFFER_TO_U8(option->value); - } - - dataPtr += option->value->size + 2/*Code Len*/; - tsk_list_push_back_data(message->options, (void**)&option); - } - else break; - } - -bail: - return message; -} - - -const tnet_dhcp_option_t* tnet_dhcp_message_find_option(const tnet_dhcp_message_t *message, tnet_dhcp_option_code_t code) -{ - tsk_list_item_t *item; - - if(!message){ - goto bail; - } - - tsk_list_foreach(item, message->options) - { - if(((tnet_dhcp_option_t*)item->data)->code == code){ - return ((tnet_dhcp_option_t*)item->data); - } - } - -bail: - return 0; -} - -int tnet_dhcp_message_add_codes(tnet_dhcp_message_t *self, tnet_dhcp_option_code_t codes[], unsigned codes_count) -{ - int ret = -1; - - if(!self){ - goto bail; - } - if(codes_count){ - unsigned i; - - tnet_dhcp_option_paramslist_t* option = (tnet_dhcp_option_paramslist_t*)tnet_dhcp_message_find_option(self, dhcp_code_Parameter_List); - if(!option){ - tnet_dhcp_option_paramslist_t *option_paramslist = tnet_dhcp_option_paramslist_create(); - option = option_paramslist; - tsk_list_push_back_data(self->options, (void**)&option_paramslist); - } - - for(i=0; i<codes_count; i++){ - if((ret = tnet_dhcp_option_paramslist_add_code(option, codes[i]))){ - break; - } - } - } - -bail: - return ret; -} - - -//================================================================================================= -// [[DHCP MESSAGE]] object definition -// -static tsk_object_t* tnet_dhcp_message_ctor(tsk_object_t * self, va_list * app) -{ - tnet_dhcp_message_t *message = self; - if(message){ - static uint32_t __dhcpmessage_unique_xid = 0;//(uint32_t)tsk_time_epoch(); - - message->op = va_arg(*app, tnet_dhcp_message_op_t); - message->htype = tnet_htype_Ethernet_10Mb; - message->hlen = 0x06; - - message->xid = ++(__dhcpmessage_unique_xid); - message->options = tsk_list_create(); - } - return self; -} - -static tsk_object_t* tnet_dhcp_message_dtor(tsk_object_t * self) -{ - tnet_dhcp_message_t *message = self; - if(message){ - TSK_OBJECT_SAFE_FREE(message->options); - } - return self; -} - -static const tsk_object_def_t tnet_dhcp_message_def_s = -{ - sizeof(tnet_dhcp_message_t), - tnet_dhcp_message_ctor, - tnet_dhcp_message_dtor, - tsk_null, -}; -const tsk_object_def_t *tnet_dhcp_message_def_t = &tnet_dhcp_message_def_s; - |
