mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
372 lines
9.2 KiB
C++
372 lines
9.2 KiB
C++
/*******************************************************************************
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* libretroshare/src/serialiser: rstlvstring.cc *
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* *
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* libretroshare: retroshare core library *
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* *
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* Copyright 2007-2008 by Robert Fernie,Chris Parker <retroshare@lunamutt.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program 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 *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#include "serialiser/rstlvstring.h"
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#include "serialiser/rstlvbase.h"
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#include "util/rsprint.h"
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#include <iostream>
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// #define TLV_DEBUG 1
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/************************************* Peer Id Set ************************************/
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RsTlvStringSet::RsTlvStringSet(uint16_t type) :mType(type)
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{
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}
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bool RsTlvStringSet::SetTlv(void *data, uint32_t size, uint32_t *offset) const
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{
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/* must check sizes */
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uint32_t tlvsize = TlvSize();
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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return false; /* not enough space */
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bool ok = true;
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/* start at data[offset] */
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ok &= SetTlvBase(data, tlvend, offset, mType , tlvsize);
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/* determine the total size of ids strings in list */
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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if (it->length() > 0)
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ok &= SetTlvString(data, tlvend, offset, TLV_TYPE_STR_GENID, *it);
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}
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return ok;
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}
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void RsTlvStringSet::TlvClear()
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{
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ids.clear();
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}
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uint32_t RsTlvStringSet::TlvSize() const
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{
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uint32_t s = TLV_HEADER_SIZE; /* header */
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/* determine the total size of ids strings in list */
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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if (it->length() > 0)
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s += GetTlvStringSize(*it);
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}
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return s;
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}
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bool RsTlvStringSet::GetTlv(void *data, uint32_t size, uint32_t *offset)
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{
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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uint16_t tlvtype = GetTlvType( &(((uint8_t *) data)[*offset]) );
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uint32_t tlvsize = GetTlvSize( &(((uint8_t *) data)[*offset]) );
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend) /* check size */
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return false; /* not enough space */
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if (tlvtype != mType) /* check type */
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return false;
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bool ok = true;
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/* ready to load */
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TlvClear();
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/* skip the header */
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(*offset) += TLV_HEADER_SIZE;
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/* while there is TLV */
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while((*offset) + 2 < tlvend)
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{
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/* get the next type */
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uint16_t tlvsubtype = GetTlvType( &(((uint8_t *) data)[*offset]) );
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if (tlvsubtype == TLV_TYPE_STR_GENID)
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{
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std::string newIds;
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ok &= GetTlvString(data, tlvend, offset, TLV_TYPE_STR_GENID, newIds);
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if(ok)
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{
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ids.push_back(newIds);
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}
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}
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else
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{
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/* Step past unknown TLV TYPE */
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ok &= SkipUnknownTlv(data, tlvend, offset);
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}
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if (!ok)
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{
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break;
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}
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}
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/***************************************************************************
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* NB: extra components could be added (for future expansion of the type).
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* or be present (if this code is reading an extended version).
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*
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* We must chew up the extra characters to conform with TLV specifications
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***************************************************************************/
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if (*offset != tlvend)
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{
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#ifdef TLV_DEBUG
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std::cerr << "RsTlvPeerIdSet::GetTlv() Warning extra bytes at end of item";
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std::cerr << std::endl;
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#endif
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*offset = tlvend;
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}
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return ok;
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}
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/// print to screen RsTlvStringSet contents
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std::ostream &RsTlvStringSet::print(std::ostream &out, uint16_t indent) const
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{
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printBase(out, "RsTlvStringSet", indent);
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uint16_t int_Indent = indent + 2;
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printIndent(out, int_Indent);
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out << "type:" << mType;
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out << std::endl;
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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printIndent(out, int_Indent);
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out << "id:" << *it;
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out << std::endl;
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}
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printEnd(out, "RsTlvStringSet", indent);
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return out;
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}
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/// print to screen RsTlvStringSet contents
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std::ostream &RsTlvStringSet::printHex(std::ostream &out, uint16_t indent) const
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{
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printBase(out, "RsTlvStringSet", indent);
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uint16_t int_Indent = indent + 2;
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printIndent(out, int_Indent);
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out << "type:" << mType;
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out << std::endl;
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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printIndent(out, int_Indent);
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out << "id: 0x" << RsUtil::BinToHex(*it);
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out << std::endl;
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}
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printEnd(out, "RsTlvStringSet", indent);
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return out;
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}
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/************************************* String Set Ref ************************************/
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/* This is exactly the same as StringSet, but it uses an alternative list.
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*/
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RsTlvStringSetRef::RsTlvStringSetRef(uint16_t type, std::list<std::string> &refids)
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:mType(type), ids(refids)
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{
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}
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void RsTlvStringSetRef::TlvClear()
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{
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ids.clear();
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}
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uint32_t RsTlvStringSetRef::TlvSize() const
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{
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uint32_t s = TLV_HEADER_SIZE; /* header */
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/* determine the total size of ids strings in list */
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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if (it->length() > 0)
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s += GetTlvStringSize(*it);
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}
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return s;
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}
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bool RsTlvStringSetRef::SetTlv(void *data, uint32_t size, uint32_t *offset) const
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{
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/* must check sizes */
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uint32_t tlvsize = TlvSize();
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend)
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return false; /* not enough space */
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bool ok = true;
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/* start at data[offset] */
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ok &= SetTlvBase(data, tlvend, offset, mType , tlvsize);
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/* determine the total size of ids strings in list */
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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if (it->length() > 0)
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ok &= SetTlvString(data, tlvend, offset, TLV_TYPE_STR_GENID, *it);
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}
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return ok;
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}
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bool RsTlvStringSetRef::GetTlv(void *data, uint32_t size, uint32_t *offset)
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{
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if (size < *offset + TLV_HEADER_SIZE)
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return false;
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uint16_t tlvtype = GetTlvType( &(((uint8_t *) data)[*offset]) );
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uint32_t tlvsize = GetTlvSize( &(((uint8_t *) data)[*offset]) );
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uint32_t tlvend = *offset + tlvsize;
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if (size < tlvend) /* check size */
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return false; /* not enough space */
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if (tlvtype != mType) /* check type */
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return false;
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bool ok = true;
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/* ready to load */
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TlvClear();
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/* skip the header */
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(*offset) += TLV_HEADER_SIZE;
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/* while there is TLV */
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while((*offset) + 2 < tlvend)
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{
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/* get the next type */
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uint16_t tlvsubtype = GetTlvType( &(((uint8_t *) data)[*offset]) );
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if (tlvsubtype == TLV_TYPE_STR_GENID)
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{
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std::string newIds;
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ok &= GetTlvString(data, tlvend, offset, TLV_TYPE_STR_GENID, newIds);
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if(ok)
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{
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ids.push_back(newIds);
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}
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}
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else
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{
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/* Step past unknown TLV TYPE */
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ok &= SkipUnknownTlv(data, tlvend, offset);
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}
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if (!ok)
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{
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break;
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}
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}
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/***************************************************************************
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* NB: extra components could be added (for future expansion of the type).
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* or be present (if this code is reading an extended version).
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*
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* We must chew up the extra characters to conform with TLV specifications
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***************************************************************************/
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if (*offset != tlvend)
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{
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#ifdef TLV_DEBUG
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std::cerr << "RsTlvPeerIdSetRef::GetTlv() Warning extra bytes at end of item";
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std::cerr << std::endl;
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#endif
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*offset = tlvend;
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}
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return ok;
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}
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/// print to screen RsTlvStringSet contents
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std::ostream &RsTlvStringSetRef::print(std::ostream &out, uint16_t indent) const
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{
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printBase(out, "RsTlvStringSetRef", indent);
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uint16_t int_Indent = indent + 2;
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printIndent(out, int_Indent);
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out << "type:" << mType;
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out << std::endl;
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std::list<std::string>::const_iterator it;
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for(it = ids.begin(); it != ids.end() ; ++it)
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{
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printIndent(out, int_Indent);
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out << "id:" << *it;
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out << std::endl;
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}
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printEnd(out, "RsTlvStringSetRef", indent);
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return out;
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}
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