mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
3d71e6338e
* print out messages when serialisation fails. * removed BUG in TlvGetString() which allows a zero length TLV git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4496 b45a01b8-16f6-495d-af2f-9b41ad6348cc
671 lines
17 KiB
C++
671 lines
17 KiB
C++
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/*
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* libretroshare/src/serialiser: rstlvbase.cc
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*
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* RetroShare Serialiser.
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*
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* Copyright 2007-2008 by Robert Fernie, Horatio, Chris Parker
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License Version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA.
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*
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* Please report all bugs and problems to "retroshare@lunamutt.com".
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*
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*/
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#include <iostream>
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#include "serialiser/rstlvbase.h"
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#include "serialiser/rsbaseserial.h"
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//*********************
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// A facility func
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inline void* right_shift_void_pointer(void* p, uint32_t len) {
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return (void*)( (uint8_t*)p + len);
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}
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//*********************
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#define TLV_BASE_DEBUG 1
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/**** Basic TLV Functions ****/
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uint32_t GetTlvSize(void *data) {
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if (!data)
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return 0;
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uint32_t len;
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void * from =right_shift_void_pointer(data, TLV_HEADER_TYPE_SIZE);
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memcpy((void *)&len, from , TLV_HEADER_LEN_SIZE);
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len = ntohl(len);
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return len;
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}
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uint16_t GetTlvType(void *data) {
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if (!data)
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return 0;
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uint16_t type;
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memcpy((void*)&type, data, TLV_HEADER_TYPE_SIZE);
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type = ntohs(type);
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return type;
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}
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//tested
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bool SetTlvBase(void *data, uint32_t size, uint32_t *offset, uint16_t type,
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uint32_t len) {
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if (!data)
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return false;
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if (!offset)
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return false;
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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uint16_t type_n = htons(type);
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//copy type_n to (data+*offset)
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void* to = right_shift_void_pointer(data, *offset);
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memcpy(to , (void*)&type_n, TLV_HEADER_TYPE_SIZE);
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uint32_t len_n =htonl(len);
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//copy len_n to (data + *offset +2)
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to = right_shift_void_pointer(to, TLV_HEADER_TYPE_SIZE);
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memcpy((void *)to, (void*)&len_n, TLV_HEADER_LEN_SIZE);
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*offset += TLV_HEADER_SIZE;
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return true;
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}
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bool SetTlvType(void *data, uint32_t size, uint16_t type)
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{
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if (!data)
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return false;
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if(size < TLV_HEADER_SIZE )
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return false;
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uint16_t type_n = htons(type);
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memcpy(data , (void*)&type_n, TLV_HEADER_TYPE_SIZE);
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return true;
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}
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//tested
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bool SetTlvSize(void *data, uint32_t size, uint32_t len) {
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if (!data)
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return false;
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if(size < TLV_HEADER_SIZE )
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return false;
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uint32_t len_n = htonl(len);
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void * to = (void*)((uint8_t *) data + TLV_HEADER_TYPE_SIZE);
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memcpy(to, (void*) &len_n, TLV_HEADER_LEN_SIZE);
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return true;
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}
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/* Step past unknown TLV TYPE */
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bool SkipUnknownTlv(void *data, uint32_t size, uint32_t *offset)
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{
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if (!data)
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return false;
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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/* extract the type and size */
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void *tlvstart = right_shift_void_pointer(data, *offset);
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//uint16_t tlvtype = GetTlvType(tlvstart);
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uint32_t tlvsize = GetTlvSize(tlvstart);
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/* check that there is size */
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "SkipUnknownTlv() FAILED - not enough space." << std::endl;
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std::cerr << "SkipUnknownTlv() size: " << size << std::endl;
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std::cerr << "SkipUnknownTlv() tlvsize: " << tlvsize << std::endl;
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std::cerr << "SkipUnknownTlv() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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bool ok = true;
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/* step past this tlv item */
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*offset = tlvend;
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return ok;
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}
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/**** Generic TLV Functions ****
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* This have the same data (int or string for example),
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* but they can have different types eg. a string could represent a name or a path,
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* so we include a type parameter in the arguments
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*/
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//tested
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bool SetTlvUInt32(void *data, uint32_t size, uint32_t *offset, uint16_t type,
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uint32_t out)
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{
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if (!data)
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return false;
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uint32_t tlvsize = GetTlvUInt32Size(); /* this will always be 8 bytes */
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uint32_t tlvend = *offset + tlvsize; /* where the data will extend to */
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "SetTlvUInt32() FAILED - not enough space. (or earlier)" << std::endl;
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std::cerr << "SetTlvUInt32() size: " << size << std::endl;
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std::cerr << "SetTlvUInt32() tlvsize: " << tlvsize << std::endl;
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std::cerr << "SetTlvUInt32() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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bool ok = true;
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/* Now use the function we got to set the TlvHeader */
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/* function shifts offset to the new start for the next data */
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ok &= SetTlvBase(data, tlvend, offset, type, tlvsize);
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#ifdef TLV_BASE_DEBUG
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if (!ok)
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{
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std::cerr << "SetTlvUInt32() SetTlvBase FAILED (or earlier)" << std::endl;
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}
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#endif
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/* now set the UInt32 ( in rsbaseserial.h???) */
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ok &= setRawUInt32(data, tlvend, offset, out);
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#ifdef TLV_BASE_DEBUG
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if (!ok)
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{
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std::cerr << "SetTlvUInt32() setRawUInt32 FAILED (or earlier)" << std::endl;
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}
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#endif
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return ok;
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}
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//tested
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bool GetTlvUInt32(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, uint32_t *in)
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{
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if (!data)
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return false;
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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/* extract the type and size */
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void *tlvstart = right_shift_void_pointer(data, *offset);
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uint16_t tlvtype = GetTlvType(tlvstart);
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uint32_t tlvsize = GetTlvSize(tlvstart);
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/* check that there is size */
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvUInt32() FAILED - not enough space." << std::endl;
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std::cerr << "GetTlvUInt32() size: " << size << std::endl;
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std::cerr << "GetTlvUInt32() tlvsize: " << tlvsize << std::endl;
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std::cerr << "GetTlvUInt32() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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if (type != tlvtype)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvUInt32() FAILED - Type mismatch" << std::endl;
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std::cerr << "GetTlvUInt32() type: " << type << std::endl;
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std::cerr << "GetTlvUInt32() tlvtype: " << tlvtype << std::endl;
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#endif
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return false;
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}
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*offset += TLV_HEADER_SIZE; /* step past header */
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bool ok = true;
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ok &= getRawUInt32(data, tlvend, offset, in);
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return ok;
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}
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uint32_t GetTlvUInt64Size() {
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return TLV_HEADER_SIZE + 8;
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}
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uint32_t GetTlvUInt32Size() {
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return TLV_HEADER_SIZE + 4;
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}
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uint32_t GetTlvUInt16Size() {
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return TLV_HEADER_SIZE + sizeof(uint16_t);
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}
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uint32_t GetTlvUInt8Size() {
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return TLV_HEADER_SIZE + sizeof(uint8_t);
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}
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bool SetTlvUInt64(void *data, uint32_t size, uint32_t *offset, uint16_t type,
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uint64_t out)
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{
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if (!data)
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return false;
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uint32_t tlvsize = GetTlvUInt64Size();
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "SetTlvUInt64() FAILED - not enough space. (or earlier)" << std::endl;
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std::cerr << "SetTlvUInt64() size: " << size << std::endl;
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std::cerr << "SetTlvUInt64() tlvsize: " << tlvsize << std::endl;
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std::cerr << "SetTlvUInt64() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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bool ok = true;
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/* Now use the function we got to set the TlvHeader */
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/* function shifts offset to the new start for the next data */
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ok &= SetTlvBase(data, tlvend, offset, type, tlvsize);
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#ifdef TLV_BASE_DEBUG
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if (!ok)
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{
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std::cerr << "SetTlvUInt64() SetTlvBase FAILED (or earlier)" << std::endl;
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}
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#endif
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/* now set the UInt64 ( in rsbaseserial.h???) */
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ok &= setRawUInt64(data, tlvend, offset, out);
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#ifdef TLV_BASE_DEBUG
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if (!ok)
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{
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std::cerr << "SetTlvUInt64() setRawUInt64 FAILED (or earlier)" << std::endl;
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}
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#endif
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return ok;
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}
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bool GetTlvUInt64(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, uint64_t *in)
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{
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if (!data)
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return false;
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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/* extract the type and size */
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void *tlvstart = right_shift_void_pointer(data, *offset);
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uint16_t tlvtype = GetTlvType(tlvstart);
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uint32_t tlvsize = GetTlvSize(tlvstart);
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/* check that there is size */
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvUInt64() FAILED - not enough space." << std::endl;
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std::cerr << "GetTlvUInt64() size: " << size << std::endl;
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std::cerr << "GetTlvUInt64() tlvsize: " << tlvsize << std::endl;
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std::cerr << "GetTlvUInt64() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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if (type != tlvtype)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvUInt64() FAILED - Type mismatch" << std::endl;
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std::cerr << "GetTlvUInt64() type: " << type << std::endl;
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std::cerr << "GetTlvUInt64() tlvtype: " << tlvtype << std::endl;
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#endif
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return false;
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}
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*offset += TLV_HEADER_SIZE; /* step past header */
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bool ok = true;
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ok &= getRawUInt64(data, tlvend, offset, in);
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return ok;
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}
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bool SetTlvString(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, std::string out)
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{
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if (!data)
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return false;
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uint32_t tlvsize = GetTlvStringSize(out);
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uint32_t tlvend = *offset + tlvsize; /* where the data will extend to */
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "SetTlvString() FAILED - not enough space" << std::endl;
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std::cerr << "SetTlvString() size: " << size << std::endl;
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std::cerr << "SetTlvString() tlvsize: " << tlvsize << std::endl;
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std::cerr << "SetTlvString() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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bool ok = true;
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ok &= SetTlvBase(data, tlvend, offset, type, tlvsize);
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void * to = right_shift_void_pointer(data, *offset);
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uint32_t strlen = tlvsize - TLV_HEADER_SIZE;
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memcpy(to, out.c_str(), strlen);
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*offset += strlen;
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return ok;
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}
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//tested
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bool GetTlvString(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, std::string &in)
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{
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if (!data)
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return false;
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if (size < *offset)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvString() FAILED - not enough space" << std::endl;
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std::cerr << "GetTlvString() size: " << size << std::endl;
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std::cerr << "GetTlvString() *offset: " << *offset << std::endl;
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#endif
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return false;
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}
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/* extract the type and size */
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void *tlvstart = right_shift_void_pointer(data, *offset);
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uint16_t tlvtype = GetTlvType(tlvstart);
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uint32_t tlvsize = GetTlvSize(tlvstart);
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/* check that there is size */
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvString() FAILED - not enough space" << std::endl;
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std::cerr << "GetTlvString() size: " << size << std::endl;
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std::cerr << "GetTlvString() tlvsize: " << tlvsize << std::endl;
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std::cerr << "GetTlvString() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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if (type != tlvtype)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvString() FAILED - invalid type" << std::endl;
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std::cerr << "GetTlvString() type: " << type << std::endl;
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std::cerr << "GetTlvString() tlvtype: " << tlvtype << std::endl;
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#endif
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return false;
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}
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char *strdata = (char *) right_shift_void_pointer(tlvstart, TLV_HEADER_SIZE);
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uint32_t strsize = tlvsize - TLV_HEADER_SIZE; /* remove the header */
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if (strsize <= 0) {
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in = "";
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} else {
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in = std::string(strdata, strsize);
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}
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*offset += tlvsize; /* step along */
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return true;
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}
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uint32_t GetTlvStringSize(const std::string &in) {
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return TLV_HEADER_SIZE + in.size();
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}
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/* We must use a consistent wchar size for cross platform ness.
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* As unix uses 4bytes, and windows 2bytes? we'll go with 4bytes for maximum flexibility
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*/
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const uint32_t RS_WCHAR_SIZE = 4;
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bool SetTlvWideString(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, std::wstring out)
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{
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if (!data)
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return false;
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uint32_t tlvsize = GetTlvWideStringSize(out);
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uint32_t tlvend = *offset + tlvsize; /* where the data will extend to */
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if (size < tlvend)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "SetTlvWideString() FAILED - not enough space" << std::endl;
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std::cerr << "SetTlvWideString() size: " << size << std::endl;
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std::cerr << "SetTlvWideString() tlvsize: " << tlvsize << std::endl;
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std::cerr << "SetTlvWideString() tlvend: " << tlvend << std::endl;
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#endif
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return false;
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}
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bool ok = true;
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ok &= SetTlvBase(data, tlvend, offset, type, tlvsize);
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uint32_t strlen = out.length();
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/* Must convert manually to ensure its always the same! */
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for(uint32_t i = 0; i < strlen; i++)
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{
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uint32_t widechar = out[i];
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ok &= setRawUInt32(data, tlvend, offset, widechar);
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}
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return ok;
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}
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//tested
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bool GetTlvWideString(void *data, uint32_t size, uint32_t *offset,
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uint16_t type, std::wstring &in)
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{
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if (!data)
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return false;
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if (size < *offset + TLV_HEADER_SIZE)
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{
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#ifdef TLV_BASE_DEBUG
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std::cerr << "GetTlvWideString() FAILED - not enough space" << std::endl;
|
|
std::cerr << "GetTlvWideString() size: " << size << std::endl;
|
|
std::cerr << "GetTlvWideString() *offset: " << *offset << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
/* extract the type and size */
|
|
void *tlvstart = right_shift_void_pointer(data, *offset);
|
|
uint16_t tlvtype = GetTlvType(tlvstart);
|
|
uint32_t tlvsize = GetTlvSize(tlvstart);
|
|
|
|
/* check that there is size */
|
|
uint32_t tlvend = *offset + tlvsize;
|
|
if (size < tlvend)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "GetTlvWideString() FAILED - not enough space" << std::endl;
|
|
std::cerr << "GetTlvWideString() size: " << size << std::endl;
|
|
std::cerr << "GetTlvWideString() tlvsize: " << tlvsize << std::endl;
|
|
std::cerr << "GetTlvWideString() tlvend: " << tlvend << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
if (type != tlvtype)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "GetTlvWideString() FAILED - invalid type" << std::endl;
|
|
std::cerr << "GetTlvWideString() type: " << type << std::endl;
|
|
std::cerr << "GetTlvWideString() tlvtype: " << tlvtype << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
|
|
bool ok = true;
|
|
/* remove the header, calc string length */
|
|
*offset += TLV_HEADER_SIZE;
|
|
uint32_t strlen = (tlvsize - TLV_HEADER_SIZE) / RS_WCHAR_SIZE;
|
|
|
|
/* Must convert manually to ensure its always the same! */
|
|
for(uint32_t i = 0; i < strlen; i++)
|
|
{
|
|
uint32_t widechar;
|
|
ok &= getRawUInt32(data, tlvend, offset, &widechar);
|
|
in += widechar;
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
uint32_t GetTlvWideStringSize(std::wstring &in) {
|
|
return TLV_HEADER_SIZE + in.size() * RS_WCHAR_SIZE;
|
|
}
|
|
|
|
|
|
bool SetTlvIpAddrPortV4(void *data, uint32_t size, uint32_t *offset,
|
|
uint16_t type, struct sockaddr_in *out) {
|
|
if (!data)
|
|
return false;
|
|
|
|
uint32_t tlvsize = GetTlvIpAddrPortV4Size();
|
|
uint32_t tlvend = *offset + tlvsize; /* where the data will extend to */
|
|
|
|
if (size < tlvend)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "SetTlvIpAddrPortV4() FAILED - not enough space" << std::endl;
|
|
std::cerr << "SetTlvIpAddrPortV4() size: " << size << std::endl;
|
|
std::cerr << "SetTlvIpAddrPortV4() tlvsize: " << tlvsize << std::endl;
|
|
std::cerr << "SetTlvIpAddrPortV4() tlvend: " << tlvend << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
bool ok = true;
|
|
ok &= SetTlvBase(data, tlvend, offset, type, tlvsize);
|
|
|
|
sockaddr_in addr = *out;
|
|
|
|
/* now add the data .... (its already in network order) - so flip */
|
|
uint32_t ipaddr = addr.sin_addr.s_addr;
|
|
ok &= setRawUInt32(data, tlvend, offset, ntohl(ipaddr));
|
|
|
|
uint16_t port = addr.sin_port;
|
|
ok &= setRawUInt16(data, tlvend, offset, ntohs(port));
|
|
|
|
return ok;
|
|
}
|
|
|
|
bool GetTlvIpAddrPortV4(void *data, uint32_t size, uint32_t *offset,
|
|
uint16_t type, struct sockaddr_in *in) {
|
|
if (!data)
|
|
return false;
|
|
|
|
if (size < *offset + TLV_HEADER_SIZE)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "GetIpAddrPortV4() FAILED - not enough space" << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() size: " << size << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() *offset: " << *offset << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
/* extract the type and size */
|
|
void *tlvstart = right_shift_void_pointer(data, *offset);
|
|
uint16_t tlvtype = GetTlvType(tlvstart);
|
|
uint32_t tlvsize = GetTlvSize(tlvstart);
|
|
|
|
/* check that there is size */
|
|
uint32_t tlvend = *offset + tlvsize;
|
|
if (size < tlvend)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "GetIpAddrPortV4() FAILED - not enough space" << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() size: " << size << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() tlvsize: " << tlvsize << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() tlvend: " << tlvend << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
if (type != tlvtype)
|
|
{
|
|
#ifdef TLV_BASE_DEBUG
|
|
std::cerr << "GetIpAddrPortV4() FAILED - invalid type" << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() type: " << type << std::endl;
|
|
std::cerr << "GetIpAddrPortV4() tlvtype: " << tlvtype << std::endl;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
*offset += TLV_HEADER_SIZE; /* skip header */
|
|
|
|
bool ok = true;
|
|
|
|
/* now get the data .... (its already in network order) - so flip */
|
|
|
|
uint32_t ipaddr;
|
|
ok &= getRawUInt32(data, tlvend, offset, &ipaddr);
|
|
in->sin_family = AF_INET; /* set FAMILY */
|
|
in->sin_addr.s_addr = htonl(ipaddr);
|
|
|
|
uint16_t port;
|
|
ok &= getRawUInt16(data, tlvend, offset, &port);
|
|
in->sin_port = htons(port);
|
|
|
|
return ok;
|
|
}
|
|
|
|
uint32_t GetTlvIpAddrPortV4Size() {
|
|
return TLV_HEADER_SIZE + 4 + 2; /* header + 4 (IP) + 2 (Port) */
|
|
}
|
|
|