390 lines
12 KiB
C++
390 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDecodeAppleFile.h"
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#include "prmem.h"
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#include "nsCRT.h"
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NS_IMPL_ADDREF(nsDecodeAppleFile)
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NS_IMPL_RELEASE(nsDecodeAppleFile)
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NS_INTERFACE_MAP_BEGIN(nsDecodeAppleFile)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIOutputStream)
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NS_INTERFACE_MAP_ENTRY(nsIOutputStream)
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NS_INTERFACE_MAP_END_THREADSAFE
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nsDecodeAppleFile::nsDecodeAppleFile()
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{
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m_state = parseHeaders;
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m_dataBufferLength = 0;
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m_dataBuffer = (unsigned char*) PR_MALLOC(MAX_BUFFERSIZE);
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m_entries = nullptr;
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m_rfRefNum = -1;
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m_totalDataForkWritten = 0;
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m_totalResourceForkWritten = 0;
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m_headerOk = false;
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m_comment[0] = 0;
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memset(&m_dates, 0, sizeof(m_dates));
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memset(&m_finderInfo, 0, sizeof(m_dates));
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memset(&m_finderExtraInfo, 0, sizeof(m_dates));
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}
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nsDecodeAppleFile::~nsDecodeAppleFile()
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{
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PR_FREEIF(m_dataBuffer);
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if (m_entries)
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delete [] m_entries;
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}
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NS_IMETHODIMP nsDecodeAppleFile::Initialize(nsIOutputStream *output, nsIFile *file)
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{
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m_output = output;
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nsCOMPtr<nsILocalFileMac> macFile = do_QueryInterface(file);
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macFile->GetTargetFSSpec(&m_fsFileSpec);
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m_offset = 0;
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m_dataForkOffset = 0;
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return NS_OK;
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}
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NS_IMETHODIMP nsDecodeAppleFile::Close(void)
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{
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nsresult rv;
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rv = m_output->Close();
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int32_t i;
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if (m_rfRefNum != -1)
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FSClose(m_rfRefNum);
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/* Check if the file is complete and if it's the case, write file attributes */
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if (m_headerOk)
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{
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bool dataOk = true; /* It's ok if the file doesn't have a datafork, therefore set it to true by default. */
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if (m_headers.magic == APPLESINGLE_MAGIC)
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{
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for (i = 0; i < m_headers.entriesCount; i ++)
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if (ENT_DFORK == m_entries[i].id)
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{
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dataOk = (bool)(m_totalDataForkWritten == m_entries[i].length);
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break;
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}
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}
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bool resourceOk = FALSE;
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for (i = 0; i < m_headers.entriesCount; i ++)
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if (ENT_RFORK == m_entries[i].id)
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{
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resourceOk = (bool)(m_totalResourceForkWritten == m_entries[i].length);
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break;
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}
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if (dataOk && resourceOk)
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{
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HFileInfo *fpb;
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CInfoPBRec cipbr;
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fpb = (HFileInfo *) &cipbr;
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fpb->ioVRefNum = m_fsFileSpec.vRefNum;
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fpb->ioDirID = m_fsFileSpec.parID;
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fpb->ioNamePtr = m_fsFileSpec.name;
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fpb->ioFDirIndex = 0;
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PBGetCatInfoSync(&cipbr);
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/* set finder info */
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memcpy(&fpb->ioFlFndrInfo, &m_finderInfo, sizeof (FInfo));
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memcpy(&fpb->ioFlXFndrInfo, &m_finderExtraInfo, sizeof (FXInfo));
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fpb->ioFlFndrInfo.fdFlags &= 0xfc00; /* clear flags maintained by finder */
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/* set file dates */
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fpb->ioFlCrDat = m_dates.create - CONVERT_TIME;
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fpb->ioFlMdDat = m_dates.modify - CONVERT_TIME;
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fpb->ioFlBkDat = m_dates.backup - CONVERT_TIME;
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/* update file info */
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fpb->ioDirID = fpb->ioFlParID;
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PBSetCatInfoSync(&cipbr);
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/* set comment */
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IOParam vinfo;
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GetVolParmsInfoBuffer vp;
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DTPBRec dtp;
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memset((void *) &vinfo, 0, sizeof (vinfo));
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vinfo.ioVRefNum = fpb->ioVRefNum;
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vinfo.ioBuffer = (Ptr) &vp;
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vinfo.ioReqCount = sizeof (vp);
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if (PBHGetVolParmsSync((HParmBlkPtr) &vinfo) == noErr && ((vp.vMAttrib >> bHasDesktopMgr) & 1))
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{
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memset((void *) &dtp, 0, sizeof (dtp));
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dtp.ioVRefNum = fpb->ioVRefNum;
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if (PBDTGetPath(&dtp) == noErr)
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{
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dtp.ioDTBuffer = (Ptr) &m_comment[1];
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dtp.ioNamePtr = fpb->ioNamePtr;
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dtp.ioDirID = fpb->ioDirID;
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dtp.ioDTReqCount = m_comment[0];
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if (PBDTSetCommentSync(&dtp) == noErr)
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PBDTFlushSync(&dtp);
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}
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}
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}
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}
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return rv;
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}
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NS_IMETHODIMP nsDecodeAppleFile::Flush(void)
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{
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return m_output->Flush();
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}
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NS_IMETHODIMP nsDecodeAppleFile::WriteFrom(nsIInputStream *inStr, uint32_t count, uint32_t *_retval)
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{
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return m_output->WriteFrom(inStr, count, _retval);
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}
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NS_IMETHODIMP nsDecodeAppleFile::WriteSegments(nsReadSegmentFun reader, void * closure, uint32_t count, uint32_t *_retval)
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{
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return m_output->WriteSegments(reader, closure, count, _retval);
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}
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NS_IMETHODIMP nsDecodeAppleFile::IsNonBlocking(bool *aNonBlocking)
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{
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return m_output->IsNonBlocking(aNonBlocking);
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}
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NS_IMETHODIMP nsDecodeAppleFile::Write(const char *buffer, uint32_t bufferSize, uint32_t* writeCount)
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{
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/* WARNING: to simplify my life, I presume that I should get all appledouble headers in the first block,
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else I would have to implement a buffer */
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const char * buffPtr = buffer;
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uint32_t dataCount;
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int32_t i;
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nsresult rv = NS_OK;
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*writeCount = 0;
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while (bufferSize > 0 && NS_SUCCEEDED(rv))
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{
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switch (m_state)
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{
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case parseHeaders :
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dataCount = sizeof(ap_header) - m_dataBufferLength;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
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m_dataBufferLength += dataCount;
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if (m_dataBufferLength == sizeof(ap_header))
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{
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memcpy(&m_headers, m_dataBuffer, sizeof(ap_header));
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/* Check header to be sure we are dealing with the right kind of data, else just write it to the data fork. */
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if ((m_headers.magic == APPLEDOUBLE_MAGIC || m_headers.magic == APPLESINGLE_MAGIC) &&
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m_headers.version == VERSION && m_headers.entriesCount)
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{
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/* Just to be sure, the filler must contains only 0 */
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for (i = 0; i < 4 && m_headers.fill[i] == 0L; i ++)
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;
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if (i == 4)
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m_state = parseEntries;
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}
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m_dataBufferLength = 0;
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if (m_state == parseHeaders)
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{
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dataCount = 0;
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m_state = parseWriteThrough;
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}
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}
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break;
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case parseEntries :
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if (!m_entries)
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{
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m_entries = new ap_entry[m_headers.entriesCount];
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if (!m_entries)
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return NS_ERROR_OUT_OF_MEMORY;
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}
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uint32_t entriesSize = sizeof(ap_entry) * m_headers.entriesCount;
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dataCount = entriesSize - m_dataBufferLength;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
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m_dataBufferLength += dataCount;
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if (m_dataBufferLength == entriesSize)
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{
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for (i = 0; i < m_headers.entriesCount; i ++)
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{
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memcpy(&m_entries[i], &m_dataBuffer[i * sizeof(ap_entry)], sizeof(ap_entry));
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if (m_headers.magic == APPLEDOUBLE_MAGIC)
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{
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uint32_t offset = m_entries[i].offset + m_entries[i].length;
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if (offset > m_dataForkOffset)
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m_dataForkOffset = offset;
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}
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}
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m_headerOk = true;
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m_state = parseLookupPart;
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}
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break;
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case parseLookupPart :
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/* which part are we parsing? */
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m_currentPartID = -1;
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for (i = 0; i < m_headers.entriesCount; i ++)
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if (m_offset == m_entries[i].offset && m_entries[i].length)
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{
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m_currentPartID = m_entries[i].id;
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m_currentPartLength = m_entries[i].length;
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m_currentPartCount = 0;
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switch (m_currentPartID)
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{
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case ENT_DFORK : m_state = parseDataFork; break;
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case ENT_RFORK : m_state = parseResourceFork; break;
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case ENT_COMMENT :
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case ENT_DATES :
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case ENT_FINFO :
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m_dataBufferLength = 0;
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m_state = parsePart;
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break;
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default : m_state = parseSkipPart; break;
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}
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break;
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}
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if (m_currentPartID == -1)
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{
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/* maybe is the datafork of an appledouble file? */
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if (m_offset == m_dataForkOffset)
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{
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m_currentPartID = ENT_DFORK;
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m_currentPartLength = -1;
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m_currentPartCount = 0;
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m_state = parseDataFork;
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}
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else
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dataCount = 1;
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}
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break;
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case parsePart :
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dataCount = m_currentPartLength - m_dataBufferLength;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
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m_dataBufferLength += dataCount;
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if (m_dataBufferLength == m_currentPartLength)
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{
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switch (m_currentPartID)
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{
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case ENT_COMMENT :
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m_comment[0] = m_currentPartLength > 255 ? 255 : m_currentPartLength;
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memcpy(&m_comment[1], buffPtr, m_comment[0]);
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break;
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case ENT_DATES :
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if (m_currentPartLength == sizeof(m_dates))
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memcpy(&m_dates, buffPtr, m_currentPartLength);
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break;
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case ENT_FINFO :
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if (m_currentPartLength == (sizeof(m_finderInfo) + sizeof(m_finderExtraInfo)))
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{
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memcpy(&m_finderInfo, buffPtr, sizeof(m_finderInfo));
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memcpy(&m_finderExtraInfo, buffPtr + sizeof(m_finderInfo), sizeof(m_finderExtraInfo));
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}
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break;
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}
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m_state = parseLookupPart;
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}
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break;
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case parseSkipPart :
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dataCount = m_currentPartLength - m_currentPartCount;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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else
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m_state = parseLookupPart;
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break;
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case parseDataFork :
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if (m_headers.magic == APPLEDOUBLE_MAGIC)
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dataCount = bufferSize;
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else
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{
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dataCount = m_currentPartLength - m_currentPartCount;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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else
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m_state = parseLookupPart;
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}
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if (m_output)
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{
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uint32_t writeCount;
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rv = m_output->Write((const char *)buffPtr, dataCount, &writeCount);
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if (dataCount != writeCount)
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rv = NS_ERROR_FAILURE;
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m_totalDataForkWritten += dataCount;
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}
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break;
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case parseResourceFork :
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dataCount = m_currentPartLength - m_currentPartCount;
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if (dataCount > bufferSize)
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dataCount = bufferSize;
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else
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m_state = parseLookupPart;
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if (m_rfRefNum == -1)
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{
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if (noErr != FSpOpenRF(&m_fsFileSpec, fsWrPerm, &m_rfRefNum))
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return NS_ERROR_FAILURE;
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}
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long count = dataCount;
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if (noErr != FSWrite(m_rfRefNum, &count, buffPtr) || count != dataCount)
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return NS_ERROR_FAILURE;
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m_totalResourceForkWritten += dataCount;
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break;
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case parseWriteThrough :
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dataCount = bufferSize;
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if (m_output)
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{
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uint32_t writeCount;
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rv = m_output->Write((const char *)buffPtr, dataCount, &writeCount);
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if (dataCount != writeCount)
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rv = NS_ERROR_FAILURE;
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}
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break;
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}
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if (dataCount)
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{
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*writeCount += dataCount;
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bufferSize -= dataCount;
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buffPtr += dataCount;
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m_currentPartCount += dataCount;
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m_offset += dataCount;
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dataCount = 0;
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}
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}
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return rv;
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}
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