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gecko-dev
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gecko-dev/uriloader/exthandler/mac/nsDecodeAppleFile.cpp

358 строки
11 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsDecodeAppleFile.h"
#include "nsCRT.h"
NS_IMPL_ADDREF(nsDecodeAppleFile)
NS_IMPL_RELEASE(nsDecodeAppleFile)
NS_INTERFACE_MAP_BEGIN(nsDecodeAppleFile)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIOutputStream)
NS_INTERFACE_MAP_ENTRY(nsIOutputStream)
NS_INTERFACE_MAP_END
nsDecodeAppleFile::nsDecodeAppleFile() {
m_state = parseHeaders;
m_dataBufferLength = 0;
m_dataBuffer = (unsigned char*)malloc(MAX_BUFFERSIZE);
m_entries = nullptr;
m_rfRefNum = -1;
m_totalDataForkWritten = 0;
m_totalResourceForkWritten = 0;
m_headerOk = false;
m_comment[0] = 0;
memset(&m_dates, 0, sizeof(m_dates));
memset(&m_finderInfo, 0, sizeof(m_dates));
memset(&m_finderExtraInfo, 0, sizeof(m_dates));
}
nsDecodeAppleFile::~nsDecodeAppleFile() {
free(m_dataBuffer);
m_dataBuffer = nullptr;
if (m_entries) delete[] m_entries;
}
NS_IMETHODIMP nsDecodeAppleFile::Initialize(nsIOutputStream* output,
nsIFile* file) {
m_output = output;
nsCOMPtr<nsILocalFileMac> macFile = do_QueryInterface(file);
macFile->GetTargetFSSpec(&m_fsFileSpec);
m_offset = 0;
m_dataForkOffset = 0;
return NS_OK;
}
NS_IMETHODIMP nsDecodeAppleFile::Close(void) {
nsresult rv;
rv = m_output->Close();
int32_t i;
if (m_rfRefNum != -1) FSClose(m_rfRefNum);
/* Check if the file is complete and if it's the case, write file attributes
*/
if (m_headerOk) {
bool dataOk = true; /* It's ok if the file doesn't have a datafork,
therefore set it to true by default. */
if (m_headers.magic == APPLESINGLE_MAGIC) {
for (i = 0; i < m_headers.entriesCount; i++)
if (ENT_DFORK == m_entries[i].id) {
dataOk = (bool)(m_totalDataForkWritten == m_entries[i].length);
break;
}
}
bool resourceOk = FALSE;
for (i = 0; i < m_headers.entriesCount; i++)
if (ENT_RFORK == m_entries[i].id) {
resourceOk = (bool)(m_totalResourceForkWritten == m_entries[i].length);
break;
}
if (dataOk && resourceOk) {
HFileInfo* fpb;
CInfoPBRec cipbr;
fpb = (HFileInfo*)&cipbr;
fpb->ioVRefNum = m_fsFileSpec.vRefNum;
fpb->ioDirID = m_fsFileSpec.parID;
fpb->ioNamePtr = m_fsFileSpec.name;
fpb->ioFDirIndex = 0;
PBGetCatInfoSync(&cipbr);
/* set finder info */
memcpy(&fpb->ioFlFndrInfo, &m_finderInfo, sizeof(FInfo));
memcpy(&fpb->ioFlXFndrInfo, &m_finderExtraInfo, sizeof(FXInfo));
fpb->ioFlFndrInfo.fdFlags &=
0xfc00; /* clear flags maintained by finder */
/* set file dates */
fpb->ioFlCrDat = m_dates.create - CONVERT_TIME;
fpb->ioFlMdDat = m_dates.modify - CONVERT_TIME;
fpb->ioFlBkDat = m_dates.backup - CONVERT_TIME;
/* update file info */
fpb->ioDirID = fpb->ioFlParID;
PBSetCatInfoSync(&cipbr);
/* set comment */
IOParam vinfo;
GetVolParmsInfoBuffer vp;
DTPBRec dtp;
memset((void*)&vinfo, 0, sizeof(vinfo));
vinfo.ioVRefNum = fpb->ioVRefNum;
vinfo.ioBuffer = (Ptr)&vp;
vinfo.ioReqCount = sizeof(vp);
if (PBHGetVolParmsSync((HParmBlkPtr)&vinfo) == noErr &&
((vp.vMAttrib >> bHasDesktopMgr) & 1)) {
memset((void*)&dtp, 0, sizeof(dtp));
dtp.ioVRefNum = fpb->ioVRefNum;
if (PBDTGetPath(&dtp) == noErr) {
dtp.ioDTBuffer = (Ptr)&m_comment[1];
dtp.ioNamePtr = fpb->ioNamePtr;
dtp.ioDirID = fpb->ioDirID;
dtp.ioDTReqCount = m_comment[0];
if (PBDTSetCommentSync(&dtp) == noErr) PBDTFlushSync(&dtp);
}
}
}
}
return rv;
}
NS_IMETHODIMP nsDecodeAppleFile::Flush(void) { return m_output->Flush(); }
NS_IMETHODIMP nsDecodeAppleFile::WriteFrom(nsIInputStream* inStr,
uint32_t count, uint32_t* _retval) {
return m_output->WriteFrom(inStr, count, _retval);
}
NS_IMETHODIMP nsDecodeAppleFile::WriteSegments(nsReadSegmentFun reader,
void* closure, uint32_t count,
uint32_t* _retval) {
return m_output->WriteSegments(reader, closure, count, _retval);
}
NS_IMETHODIMP nsDecodeAppleFile::IsNonBlocking(bool* aNonBlocking) {
return m_output->IsNonBlocking(aNonBlocking);
}
NS_IMETHODIMP nsDecodeAppleFile::Write(const char* buffer, uint32_t bufferSize,
uint32_t* writeCount) {
/* WARNING: to simplify my life, I presume that I should get all appledouble
headers in the first block, else I would have to implement a buffer */
const char* buffPtr = buffer;
uint32_t dataCount;
int32_t i;
nsresult rv = NS_OK;
*writeCount = 0;
while (bufferSize > 0 && NS_SUCCEEDED(rv)) {
switch (m_state) {
case parseHeaders:
dataCount = sizeof(ap_header) - m_dataBufferLength;
if (dataCount > bufferSize) dataCount = bufferSize;
memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
m_dataBufferLength += dataCount;
if (m_dataBufferLength == sizeof(ap_header)) {
memcpy(&m_headers, m_dataBuffer, sizeof(ap_header));
/* Check header to be sure we are dealing with the right kind of data,
* else just write it to the data fork. */
if ((m_headers.magic == APPLEDOUBLE_MAGIC ||
m_headers.magic == APPLESINGLE_MAGIC) &&
m_headers.version == VERSION && m_headers.entriesCount) {
/* Just to be sure, the filler must contains only 0 */
for (i = 0; i < 4 && m_headers.fill[i] == 0L; i++)
;
if (i == 4) m_state = parseEntries;
}
m_dataBufferLength = 0;
if (m_state == parseHeaders) {
dataCount = 0;
m_state = parseWriteThrough;
}
}
break;
case parseEntries:
if (!m_entries) {
m_entries = new ap_entry[m_headers.entriesCount];
if (!m_entries) return NS_ERROR_OUT_OF_MEMORY;
}
uint32_t entriesSize = sizeof(ap_entry) * m_headers.entriesCount;
dataCount = entriesSize - m_dataBufferLength;
if (dataCount > bufferSize) dataCount = bufferSize;
memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
m_dataBufferLength += dataCount;
if (m_dataBufferLength == entriesSize) {
for (i = 0; i < m_headers.entriesCount; i++) {
memcpy(&m_entries[i], &m_dataBuffer[i * sizeof(ap_entry)],
sizeof(ap_entry));
if (m_headers.magic == APPLEDOUBLE_MAGIC) {
uint32_t offset = m_entries[i].offset + m_entries[i].length;
if (offset > m_dataForkOffset) m_dataForkOffset = offset;
}
}
m_headerOk = true;
m_state = parseLookupPart;
}
break;
case parseLookupPart:
/* which part are we parsing? */
m_currentPartID = -1;
for (i = 0; i < m_headers.entriesCount; i++)
if (m_offset == m_entries[i].offset && m_entries[i].length) {
m_currentPartID = m_entries[i].id;
m_currentPartLength = m_entries[i].length;
m_currentPartCount = 0;
switch (m_currentPartID) {
case ENT_DFORK:
m_state = parseDataFork;
break;
case ENT_RFORK:
m_state = parseResourceFork;
break;
case ENT_COMMENT:
case ENT_DATES:
case ENT_FINFO:
m_dataBufferLength = 0;
m_state = parsePart;
break;
default:
m_state = parseSkipPart;
break;
}
break;
}
if (m_currentPartID == -1) {
/* maybe is the datafork of an appledouble file? */
if (m_offset == m_dataForkOffset) {
m_currentPartID = ENT_DFORK;
m_currentPartLength = -1;
m_currentPartCount = 0;
m_state = parseDataFork;
} else
dataCount = 1;
}
break;
case parsePart:
dataCount = m_currentPartLength - m_dataBufferLength;
if (dataCount > bufferSize) dataCount = bufferSize;
memcpy(&m_dataBuffer[m_dataBufferLength], buffPtr, dataCount);
m_dataBufferLength += dataCount;
if (m_dataBufferLength == m_currentPartLength) {
switch (m_currentPartID) {
case ENT_COMMENT:
m_comment[0] =
m_currentPartLength > 255 ? 255 : m_currentPartLength;
memcpy(&m_comment[1], buffPtr, m_comment[0]);
break;
case ENT_DATES:
if (m_currentPartLength == sizeof(m_dates))
memcpy(&m_dates, buffPtr, m_currentPartLength);
break;
case ENT_FINFO:
if (m_currentPartLength ==
(sizeof(m_finderInfo) + sizeof(m_finderExtraInfo))) {
memcpy(&m_finderInfo, buffPtr, sizeof(m_finderInfo));
memcpy(&m_finderExtraInfo, buffPtr + sizeof(m_finderInfo),
sizeof(m_finderExtraInfo));
}
break;
}
m_state = parseLookupPart;
}
break;
case parseSkipPart:
dataCount = m_currentPartLength - m_currentPartCount;
if (dataCount > bufferSize)
dataCount = bufferSize;
else
m_state = parseLookupPart;
break;
case parseDataFork:
if (m_headers.magic == APPLEDOUBLE_MAGIC)
dataCount = bufferSize;
else {
dataCount = m_currentPartLength - m_currentPartCount;
if (dataCount > bufferSize)
dataCount = bufferSize;
else
m_state = parseLookupPart;
}
if (m_output) {
uint32_t writeCount;
rv = m_output->Write((const char*)buffPtr, dataCount, &writeCount);
if (dataCount != writeCount) rv = NS_ERROR_FAILURE;
m_totalDataForkWritten += dataCount;
}
break;
case parseResourceFork:
dataCount = m_currentPartLength - m_currentPartCount;
if (dataCount > bufferSize)
dataCount = bufferSize;
else
m_state = parseLookupPart;
if (m_rfRefNum == -1) {
if (noErr != FSpOpenRF(&m_fsFileSpec, fsWrPerm, &m_rfRefNum))
return NS_ERROR_FAILURE;
}
long count = dataCount;
if (noErr != FSWrite(m_rfRefNum, &count, buffPtr) || count != dataCount)
return NS_ERROR_FAILURE;
m_totalResourceForkWritten += dataCount;
break;
case parseWriteThrough:
dataCount = bufferSize;
if (m_output) {
uint32_t writeCount;
rv = m_output->Write((const char*)buffPtr, dataCount, &writeCount);
if (dataCount != writeCount) rv = NS_ERROR_FAILURE;
}
break;
}
if (dataCount) {
*writeCount += dataCount;
bufferSize -= dataCount;
buffPtr += dataCount;
m_currentPartCount += dataCount;
m_offset += dataCount;
dataCount = 0;
}
}
return rv;
}
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