lltemplatemessagebuilder.cpp
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- /**
- * @file lltemplatemessagebuilder.cpp
- * @brief LLTemplateMessageBuilder class implementation.
- *
- * $LicenseInfo:firstyear=2007&license=viewergpl$
- *
- * Copyright (c) 2007-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- #include "lltemplatemessagebuilder.h"
- #include "llmessagetemplate.h"
- #include "llquaternion.h"
- #include "u64.h"
- #include "v3dmath.h"
- #include "v3math.h"
- #include "v4math.h"
- LLTemplateMessageBuilder::LLTemplateMessageBuilder(const message_template_name_map_t& name_template_map) :
- mCurrentSMessageData(NULL),
- mCurrentSMessageTemplate(NULL),
- mCurrentSDataBlock(NULL),
- mCurrentSMessageName(NULL),
- mCurrentSBlockName(NULL),
- mbSBuilt(FALSE),
- mbSClear(TRUE),
- mCurrentSendTotal(0),
- mMessageTemplates(name_template_map)
- {
- }
- //virtual
- LLTemplateMessageBuilder::~LLTemplateMessageBuilder()
- {
- delete mCurrentSMessageData;
- mCurrentSMessageData = NULL;
- }
- // virtual
- void LLTemplateMessageBuilder::newMessage(const char *name)
- {
- mbSBuilt = FALSE;
- mbSClear = FALSE;
- mCurrentSendTotal = 0;
- delete mCurrentSMessageData;
- mCurrentSMessageData = NULL;
- char* namep = (char*)name;
- if (mMessageTemplates.count(namep) > 0)
- {
- mCurrentSMessageTemplate = mMessageTemplates.find(name)->second;
- mCurrentSMessageData = new LLMsgData(namep);
- mCurrentSMessageName = namep;
- mCurrentSDataBlock = NULL;
- mCurrentSBlockName = NULL;
- // add at one of each block
- const LLMessageTemplate* msg_template = mMessageTemplates.find(name)->second;
- if (msg_template->getDeprecation() != MD_NOTDEPRECATED)
- {
- llwarns << "Sending deprecated message " << namep << llendl;
- }
- LLMessageTemplate::message_block_map_t::const_iterator iter;
- for(iter = msg_template->mMemberBlocks.begin();
- iter != msg_template->mMemberBlocks.end();
- ++iter)
- {
- LLMessageBlock* ci = *iter;
- LLMsgBlkData* tblockp = new LLMsgBlkData(ci->mName, 0);
- mCurrentSMessageData->addBlock(tblockp);
- }
- }
- else
- {
- llerrs << "newMessage - Message " << name << " not registered" << llendl;
- }
- }
- // virtual
- void LLTemplateMessageBuilder::clearMessage()
- {
- mbSBuilt = FALSE;
- mbSClear = TRUE;
- mCurrentSendTotal = 0;
- mCurrentSMessageTemplate = NULL;
- delete mCurrentSMessageData;
- mCurrentSMessageData = NULL;
- mCurrentSMessageName = NULL;
- mCurrentSDataBlock = NULL;
- mCurrentSBlockName = NULL;
- }
- // virtual
- void LLTemplateMessageBuilder::nextBlock(const char* blockname)
- {
- char *bnamep = (char *)blockname;
- if (!mCurrentSMessageTemplate)
- {
- llerrs << "newMessage not called prior to setBlock" << llendl;
- return;
- }
- // now, does this block exist?
- const LLMessageBlock* template_data = mCurrentSMessageTemplate->getBlock(bnamep);
- if (!template_data)
- {
- llerrs << "LLTemplateMessageBuilder::nextBlock " << bnamep
- << " not a block in " << mCurrentSMessageTemplate->mName << llendl;
- return;
- }
- // ok, have we already set this block?
- LLMsgBlkData* block_data = mCurrentSMessageData->mMemberBlocks[bnamep];
- if (block_data->mBlockNumber == 0)
- {
- // nope! set this as the current block
- block_data->mBlockNumber = 1;
- mCurrentSDataBlock = block_data;
- mCurrentSBlockName = bnamep;
- // add placeholders for each of the variables
- for (LLMessageBlock::message_variable_map_t::const_iterator iter = template_data->mMemberVariables.begin();
- iter != template_data->mMemberVariables.end(); iter++)
- {
- LLMessageVariable& ci = **iter;
- mCurrentSDataBlock->addVariable(ci.getName(), ci.getType());
- }
- return;
- }
- else
- {
- // already have this block. . .
- // are we supposed to have a new one?
- // if the block is type MBT_SINGLE this is bad!
- if (template_data->mType == MBT_SINGLE)
- {
- llerrs << "LLTemplateMessageBuilder::nextBlock called multiple times"
- << " for " << bnamep << " but is type MBT_SINGLE" << llendl;
- return;
- }
- // if the block is type MBT_MULTIPLE then we need a known number,
- // make sure that we're not exceeding it
- if ( (template_data->mType == MBT_MULTIPLE)
- &&(mCurrentSDataBlock->mBlockNumber == template_data->mNumber))
- {
- llerrs << "LLTemplateMessageBuilder::nextBlock called "
- << mCurrentSDataBlock->mBlockNumber << " times for " << bnamep
- << " exceeding " << template_data->mNumber
- << " specified in type MBT_MULTIPLE." << llendl;
- return;
- }
- // ok, we can make a new one
- // modify the name to avoid name collision by adding number to end
- S32 count = block_data->mBlockNumber;
- // incrememt base name's count
- block_data->mBlockNumber++;
- if (block_data->mBlockNumber > MAX_BLOCKS)
- {
- llerrs << "Trying to pack too many blocks into MBT_VARIABLE type "
- << "(limited to " << MAX_BLOCKS << ")" << llendl;
- }
- // create new name
- // Nota Bene: if things are working correctly,
- // mCurrentMessageData->mMemberBlocks[blockname]->mBlockNumber ==
- // mCurrentDataBlock->mBlockNumber + 1
- char *nbnamep = bnamep + count;
- mCurrentSDataBlock = new LLMsgBlkData(bnamep, count);
- mCurrentSDataBlock->mName = nbnamep;
- mCurrentSMessageData->mMemberBlocks[nbnamep] = mCurrentSDataBlock;
- // add placeholders for each of the variables
- for (LLMessageBlock::message_variable_map_t::const_iterator
- iter = template_data->mMemberVariables.begin(),
- end = template_data->mMemberVariables.end();
- iter != end; iter++)
- {
- LLMessageVariable& ci = **iter;
- mCurrentSDataBlock->addVariable(ci.getName(), ci.getType());
- }
- return;
- }
- }
- // TODO: Remove this horror...
- BOOL LLTemplateMessageBuilder::removeLastBlock()
- {
- if (mCurrentSBlockName)
- {
- if ( (mCurrentSMessageData)
- &&(mCurrentSMessageTemplate))
- {
- if (mCurrentSMessageData->mMemberBlocks[mCurrentSBlockName]->mBlockNumber >= 1)
- {
- // At least one block for the current block name.
- // Store the current block name for future reference.
- char *block_name = mCurrentSBlockName;
- // Decrement the sent total by the size of the
- // data in the message block that we're currently building.
- const LLMessageBlock* template_data = mCurrentSMessageTemplate->getBlock(mCurrentSBlockName);
- for (LLMessageBlock::message_variable_map_t::const_iterator iter = template_data->mMemberVariables.begin();
- iter != template_data->mMemberVariables.end(); iter++)
- {
- LLMessageVariable& ci = **iter;
- mCurrentSendTotal -= ci.getSize();
- }
- // Now we want to find the block that we're blowing away.
- // Get the number of blocks.
- LLMsgBlkData* block_data = mCurrentSMessageData->mMemberBlocks[block_name];
- S32 num_blocks = block_data->mBlockNumber;
- // Use the same (suspect?) algorithm that's used to generate
- // the names in the nextBlock method to find it.
- char *block_getting_whacked = block_name + num_blocks - 1;
- LLMsgBlkData* whacked_data = mCurrentSMessageData->mMemberBlocks[block_getting_whacked];
- delete whacked_data;
- mCurrentSMessageData->mMemberBlocks.erase(block_getting_whacked);
- if (num_blocks <= 1)
- {
- // we just blew away the last one, so return FALSE
- llwarns << "not blowing away the only block of message "
- << mCurrentSMessageName
- << ". Block: " << block_name
- << ". Number: " << num_blocks
- << llendl;
- return FALSE;
- }
- else
- {
- // Decrement the counter.
- block_data->mBlockNumber--;
- return TRUE;
- }
- }
- }
- }
- return FALSE;
- }
- // add data to variable in current block
- void LLTemplateMessageBuilder::addData(const char *varname, const void *data, EMsgVariableType type, S32 size)
- {
- char *vnamep = (char *)varname;
- // do we have a current message?
- if (!mCurrentSMessageTemplate)
- {
- llerrs << "newMessage not called prior to addData" << llendl;
- return;
- }
- // do we have a current block?
- if (!mCurrentSDataBlock)
- {
- llerrs << "setBlock not called prior to addData" << llendl;
- return;
- }
- // kewl, add the data if it exists
- const LLMessageVariable* var_data = mCurrentSMessageTemplate->getBlock(mCurrentSBlockName)->getVariable(vnamep);
- if (!var_data || !var_data->getName())
- {
- llerrs << vnamep << " not a variable in block " << mCurrentSBlockName << " of " << mCurrentSMessageTemplate->mName << llendl;
- return;
- }
- // ok, it seems ok. . . are we the correct size?
- if (var_data->getType() == MVT_VARIABLE)
- {
- // Variable 1 can only store 255 bytes, make sure our data is smaller
- if ((var_data->getSize() == 1) &&
- (size > 255))
- {
- llwarns << "Field " << varname << " is a Variable 1 but program "
- << "attempted to stuff more than 255 bytes in "
- << "(" << size << "). Clamping size and truncating data." << llendl;
- size = 255;
- char *truncate = (char *)data;
- truncate[255] = 0;
- }
- // no correct size for MVT_VARIABLE, instead we need to tell how many bytes the size will be encoded as
- mCurrentSDataBlock->addData(vnamep, data, size, type, var_data->getSize());
- mCurrentSendTotal += size;
- }
- else
- {
- if (size != var_data->getSize())
- {
- llerrs << varname << " is type MVT_FIXED but request size " << size << " doesn't match template size "
- << var_data->getSize() << llendl;
- return;
- }
- // alright, smash it in
- mCurrentSDataBlock->addData(vnamep, data, size, type);
- mCurrentSendTotal += size;
- }
- }
- // add data to variable in current block - fails if variable isn't MVT_FIXED
- void LLTemplateMessageBuilder::addData(const char *varname, const void *data, EMsgVariableType type)
- {
- char *vnamep = (char *)varname;
- // do we have a current message?
- if (!mCurrentSMessageTemplate)
- {
- llerrs << "newMessage not called prior to addData" << llendl;
- return;
- }
- // do we have a current block?
- if (!mCurrentSDataBlock)
- {
- llerrs << "setBlock not called prior to addData" << llendl;
- return;
- }
- // kewl, add the data if it exists
- const LLMessageVariable* var_data = mCurrentSMessageTemplate->getBlock(mCurrentSBlockName)->getVariable(vnamep);
- if (!var_data->getName())
- {
- llerrs << vnamep << " not a variable in block " << mCurrentSBlockName << " of " << mCurrentSMessageTemplate->mName << llendl;
- return;
- }
- // ok, it seems ok. . . are we MVT_VARIABLE?
- if (var_data->getType() == MVT_VARIABLE)
- {
- // nope
- llerrs << vnamep << " is type MVT_VARIABLE. Call using addData(name, data, size)" << llendl;
- return;
- }
- else
- {
- mCurrentSDataBlock->addData(vnamep, data, var_data->getSize(), type);
- mCurrentSendTotal += var_data->getSize();
- }
- }
- void LLTemplateMessageBuilder::addBinaryData(const char *varname,
- const void *data, S32 size)
- {
- addData(varname, data, MVT_FIXED, size);
- }
- void LLTemplateMessageBuilder::addS8(const char *varname, S8 s)
- {
- addData(varname, &s, MVT_S8, sizeof(s));
- }
- void LLTemplateMessageBuilder::addU8(const char *varname, U8 u)
- {
- addData(varname, &u, MVT_U8, sizeof(u));
- }
- void LLTemplateMessageBuilder::addS16(const char *varname, S16 i)
- {
- addData(varname, &i, MVT_S16, sizeof(i));
- }
- void LLTemplateMessageBuilder::addU16(const char *varname, U16 i)
- {
- addData(varname, &i, MVT_U16, sizeof(i));
- }
- void LLTemplateMessageBuilder::addF32(const char *varname, F32 f)
- {
- addData(varname, &f, MVT_F32, sizeof(f));
- }
- void LLTemplateMessageBuilder::addS32(const char *varname, S32 s)
- {
- addData(varname, &s, MVT_S32, sizeof(s));
- }
- void LLTemplateMessageBuilder::addU32(const char *varname, U32 u)
- {
- addData(varname, &u, MVT_U32, sizeof(u));
- }
- void LLTemplateMessageBuilder::addU64(const char *varname, U64 lu)
- {
- addData(varname, &lu, MVT_U64, sizeof(lu));
- }
- void LLTemplateMessageBuilder::addF64(const char *varname, F64 d)
- {
- addData(varname, &d, MVT_F64, sizeof(d));
- }
- void LLTemplateMessageBuilder::addIPAddr(const char *varname, U32 u)
- {
- addData(varname, &u, MVT_IP_ADDR, sizeof(u));
- }
- void LLTemplateMessageBuilder::addIPPort(const char *varname, U16 u)
- {
- u = htons(u);
- addData(varname, &u, MVT_IP_PORT, sizeof(u));
- }
- void LLTemplateMessageBuilder::addBOOL(const char* varname, BOOL b)
- {
- // Can't just cast a BOOL (actually a U32) to a U8.
- // In some cases the low order bits will be zero.
- U8 temp = (b != 0);
- addData(varname, &temp, MVT_BOOL, sizeof(temp));
- }
- void LLTemplateMessageBuilder::addString(const char* varname, const char* s)
- {
- if (s)
- addData( varname, (void *)s, MVT_VARIABLE, (S32)strlen(s) + 1); /* Flawfinder: ignore */
- else
- addData( varname, NULL, MVT_VARIABLE, 0);
- }
- void LLTemplateMessageBuilder::addString(const char* varname, const std::string& s)
- {
- if (s.size())
- addData( varname, (void *)s.c_str(), MVT_VARIABLE, (S32)(s.size()) + 1);
- else
- addData( varname, NULL, MVT_VARIABLE, 0);
- }
- void LLTemplateMessageBuilder::addVector3(const char *varname, const LLVector3& vec)
- {
- addData(varname, vec.mV, MVT_LLVector3, sizeof(vec.mV));
- }
- void LLTemplateMessageBuilder::addVector4(const char *varname, const LLVector4& vec)
- {
- addData(varname, vec.mV, MVT_LLVector4, sizeof(vec.mV));
- }
- void LLTemplateMessageBuilder::addVector3d(const char *varname, const LLVector3d& vec)
- {
- addData(varname, vec.mdV, MVT_LLVector3d, sizeof(vec.mdV));
- }
- void LLTemplateMessageBuilder::addQuat(const char *varname, const LLQuaternion& quat)
- {
- addData(varname, quat.packToVector3().mV, MVT_LLQuaternion, sizeof(LLVector3));
- }
- void LLTemplateMessageBuilder::addUUID(const char *varname, const LLUUID& uuid)
- {
- addData(varname, uuid.mData, MVT_LLUUID, sizeof(uuid.mData));
- }
- static S32 zero_code(U8 **data, U32 *data_size)
- {
- // Encoded send buffer needs to be slightly larger since the zero
- // coding can potentially increase the size of the send data.
- static U8 encodedSendBuffer[2 * MAX_BUFFER_SIZE];
- S32 count = *data_size;
- S32 net_gain = 0;
- U8 num_zeroes = 0;
- U8 *inptr = (U8 *)*data;
- U8 *outptr = (U8 *)encodedSendBuffer;
- // skip the packet id field
- for (U32 ii = 0; ii < LL_PACKET_ID_SIZE ; ++ii)
- {
- count--;
- *outptr++ = *inptr++;
- }
- // build encoded packet, keeping track of net size gain
- // sequential zero bytes are encoded as 0 [U8 count]
- // with 0 0 [count] representing wrap (>256 zeroes)
- while (count--)
- {
- if (!(*inptr)) // in a zero count
- {
- if (num_zeroes)
- {
- if (++num_zeroes > 254)
- {
- *outptr++ = num_zeroes;
- num_zeroes = 0;
- }
- net_gain--; // subseqent zeroes save one
- }
- else
- {
- *outptr++ = 0;
- net_gain++; // starting a zero count adds one
- num_zeroes = 1;
- }
- inptr++;
- }
- else
- {
- if (num_zeroes)
- {
- *outptr++ = num_zeroes;
- num_zeroes = 0;
- }
- *outptr++ = *inptr++;
- }
- }
- if (num_zeroes)
- {
- *outptr++ = num_zeroes;
- }
- if (net_gain < 0)
- {
- // TODO: babbage: reinstate stat collecting...
- //mCompressedPacketsOut++;
- //mUncompressedBytesOut += *data_size;
- *data = encodedSendBuffer;
- *data_size += net_gain;
- encodedSendBuffer[0] |= LL_ZERO_CODE_FLAG; // set the head bit to indicate zero coding
- //mCompressedBytesOut += *data_size;
- }
- //mTotalBytesOut += *data_size;
- return(net_gain);
- }
- void LLTemplateMessageBuilder::compressMessage(U8*& buf_ptr, U32& buffer_length)
- {
- if(ME_ZEROCODED == mCurrentSMessageTemplate->getEncoding())
- {
- zero_code(&buf_ptr, &buffer_length);
- }
- }
- BOOL LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
- {
- if(mCurrentSendTotal > MTUBYTES)
- {
- return TRUE;
- }
- if(!blockname)
- {
- return FALSE;
- }
- char* bnamep = (char*)blockname;
- S32 max;
- const LLMessageBlock* template_data = mCurrentSMessageTemplate->getBlock(bnamep);
- switch(template_data->mType)
- {
- case MBT_SINGLE:
- max = 1;
- break;
- case MBT_MULTIPLE:
- max = template_data->mNumber;
- break;
- case MBT_VARIABLE:
- default:
- max = MAX_BLOCKS;
- break;
- }
- if(mCurrentSMessageData->mMemberBlocks[bnamep]->mBlockNumber >= max)
- {
- return TRUE;
- }
- return FALSE;
- }
- static S32 buildBlock(U8* buffer, S32 buffer_size, const LLMessageBlock* template_data, LLMsgData* message_data)
- {
- S32 result = 0;
- LLMsgData::msg_blk_data_map_t::const_iterator block_iter = message_data->mMemberBlocks.find(template_data->mName);
- const LLMsgBlkData* mbci = block_iter->second;
- // ok, if this is the first block of a repeating pack, set
- // block_count and, if it's type MBT_VARIABLE encode a byte
- // for how many there are
- S32 block_count = mbci->mBlockNumber;
- if (template_data->mType == MBT_VARIABLE)
- {
- // remember that mBlockNumber is a S32
- U8 temp_block_number = (U8)mbci->mBlockNumber;
- if ((S32)(result + sizeof(U8)) < MAX_BUFFER_SIZE)
- {
- memcpy(&buffer[result], &temp_block_number, sizeof(U8));
- result += sizeof(U8);
- }
- else
- {
- // Just reporting error is likely not enough. Need
- // to check how to abort or error out gracefully
- // from this function. XXXTBD
- llerrs << "buildBlock failed. Message excedding "
- << "sendBuffersize." << llendl;
- }
- }
- else if (template_data->mType == MBT_MULTIPLE)
- {
- if (block_count != template_data->mNumber)
- {
- // nope! need to fill it in all the way!
- llerrs << "Block " << mbci->mName
- << " is type MBT_MULTIPLE but only has data for "
- << block_count << " out of its "
- << template_data->mNumber << " blocks" << llendl;
- }
- }
- while(block_count > 0)
- {
- // now loop through the variables
- for (LLMsgBlkData::msg_var_data_map_t::const_iterator iter = mbci->mMemberVarData.begin();
- iter != mbci->mMemberVarData.end(); iter++)
- {
- const LLMsgVarData& mvci = *iter;
- if (mvci.getSize() == -1)
- {
- // oops, this variable wasn't ever set!
- llerrs << "The variable " << mvci.getName() << " in block "
- << mbci->mName << " of message "
- << template_data->mName
- << " wasn't set prior to buildMessage call" << llendl;
- }
- else
- {
- S32 data_size = mvci.getDataSize();
- if(data_size > 0)
- {
- // The type is MVT_VARIABLE, which means that we
- // need to encode a size argument. Otherwise,
- // there is no need.
- S32 size = mvci.getSize();
- U8 sizeb;
- U16 sizeh;
- switch(data_size)
- {
- case 1:
- sizeb = size;
- htonmemcpy(&buffer[result], &sizeb, MVT_U8, 1);
- break;
- case 2:
- sizeh = size;
- htonmemcpy(&buffer[result], &sizeh, MVT_U16, 2);
- break;
- case 4:
- htonmemcpy(&buffer[result], &size, MVT_S32, 4);
- break;
- default:
- llerrs << "Attempting to build variable field with unknown size of " << size << llendl;
- break;
- }
- result += mvci.getDataSize();
- }
- // if there is any data to pack, pack it
- if((mvci.getData() != NULL) && mvci.getSize())
- {
- if(result + mvci.getSize() < buffer_size)
- {
- memcpy(
- &buffer[result],
- mvci.getData(),
- mvci.getSize());
- result += mvci.getSize();
- }
- else
- {
- // Just reporting error is likely not
- // enough. Need to check how to abort or error
- // out gracefully from this function. XXXTBD
- llerrs << "buildBlock failed. "
- << "Attempted to pack "
- << (result + mvci.getSize())
- << " bytes into a buffer with size "
- << buffer_size << "." << llendl;
- }
- }
- }
- }
- --block_count;
- if (block_iter != message_data->mMemberBlocks.end())
- {
- ++block_iter;
- if (block_iter != message_data->mMemberBlocks.end())
- {
- mbci = block_iter->second;
- }
- }
- }
- return result;
- }
- // make sure that all the desired data is in place and then copy the data into MAX_BUFFER_SIZEd buffer
- U32 LLTemplateMessageBuilder::buildMessage(
- U8* buffer,
- U32 buffer_size,
- U8 offset_to_data)
- {
- // basic algorithm is to loop through the various pieces, building
- // size and offset info if we encounter a -1 for mSize at any
- // point that variable wasn't given data
- // do we have a current message?
- if (!mCurrentSMessageTemplate)
- {
- llerrs << "newMessage not called prior to buildMessage" << llendl;
- return 0;
- }
- // leave room for flags, packet sequence #, and data offset
- // information.
- buffer[PHL_OFFSET] = offset_to_data;
- U32 result = LL_PACKET_ID_SIZE;
- // encode message number and adjust total_offset
- if (mCurrentSMessageTemplate->mFrequency == MFT_HIGH)
- {
- // old, endian-dependant way
- // memcpy(&buffer[result], &mCurrentMessageTemplate->mMessageNumber, sizeof(U8));
- // new, independant way
- buffer[result] = (U8)mCurrentSMessageTemplate->mMessageNumber;
- result += sizeof(U8);
- }
- else if (mCurrentSMessageTemplate->mFrequency == MFT_MEDIUM)
- {
- U8 temp = 255;
- memcpy(&buffer[result], &temp, sizeof(U8)); /*Flawfinder: ignore*/
- result += sizeof(U8);
- // mask off unsightly bits
- temp = mCurrentSMessageTemplate->mMessageNumber & 255;
- memcpy(&buffer[result], &temp, sizeof(U8)); /*Flawfinder: ignore*/
- result += sizeof(U8);
- }
- else if (mCurrentSMessageTemplate->mFrequency == MFT_LOW)
- {
- U8 temp = 255;
- U16 message_num;
- memcpy(&buffer[result], &temp, sizeof(U8)); /*Flawfinder: ignore*/
- result += sizeof(U8);
- memcpy(&buffer[result], &temp, sizeof(U8)); /*Flawfinder: ignore*/
- result += sizeof(U8);
- // mask off unsightly bits
- message_num = mCurrentSMessageTemplate->mMessageNumber & 0xFFFF;
- // convert to network byte order
- message_num = htons(message_num);
- memcpy(&buffer[result], &message_num, sizeof(U16)); /*Flawfinder: ignore*/
- result += sizeof(U16);
- }
- else
- {
- llerrs << "unexpected message frequency in buildMessage" << llendl;
- return 0;
- }
- // fast forward through the offset and build the message
- result += offset_to_data;
- for(LLMessageTemplate::message_block_map_t::const_iterator
- iter = mCurrentSMessageTemplate->mMemberBlocks.begin(),
- end = mCurrentSMessageTemplate->mMemberBlocks.end();
- iter != end;
- ++iter)
- {
- result += buildBlock(buffer + result, buffer_size - result, *iter, mCurrentSMessageData);
- }
- mbSBuilt = TRUE;
- return result;
- }
- void LLTemplateMessageBuilder::copyFromMessageData(const LLMsgData& data)
- {
- // copy the blocks
- // counting variables used to encode multiple block info
- S32 block_count = 0;
- char *block_name = NULL;
- // loop through msg blocks to loop through variables, totalling up size
- // data and filling the new (send) message
- LLMsgData::msg_blk_data_map_t::const_iterator iter =
- data.mMemberBlocks.begin();
- LLMsgData::msg_blk_data_map_t::const_iterator end =
- data.mMemberBlocks.end();
- for(; iter != end; ++iter)
- {
- const LLMsgBlkData* mbci = iter->second;
- if(!mbci) continue;
- // do we need to encode a block code?
- if (block_count == 0)
- {
- block_count = mbci->mBlockNumber;
- block_name = (char *)mbci->mName;
- }
- // counting down mutliple blocks
- block_count--;
- nextBlock(block_name);
- // now loop through the variables
- LLMsgBlkData::msg_var_data_map_t::const_iterator dit = mbci->mMemberVarData.begin();
- LLMsgBlkData::msg_var_data_map_t::const_iterator dend = mbci->mMemberVarData.end();
- for(; dit != dend; ++dit)
- {
- const LLMsgVarData& mvci = *dit;
- addData(mvci.getName(), mvci.getData(), mvci.getType(), mvci.getSize());
- }
- }
- }
- //virtual
- void LLTemplateMessageBuilder::copyFromLLSD(const LLSD&)
- {
- // TODO
- }
- //virtual
- void LLTemplateMessageBuilder::setBuilt(BOOL b) { mbSBuilt = b; }
- //virtual
- BOOL LLTemplateMessageBuilder::isBuilt() const {return mbSBuilt;}
- //virtual
- BOOL LLTemplateMessageBuilder::isClear() const {return mbSClear;}
- //virtual
- S32 LLTemplateMessageBuilder::getMessageSize() {return mCurrentSendTotal;}
- //virtual
- const char* LLTemplateMessageBuilder::getMessageName() const
- {
- return mCurrentSMessageName;
- }