mozilla
/
libdmg-hfsplus
зеркало из https://github.com/mozilla/libdmg-hfsplus.git
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libdmg-hfsplus/hfs/catalog.c

1092 строки
30 KiB
C
Исходник Постоянная ссылка Ответственный История

#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <hfs/hfsplus.h>
static inline void flipBSDInfo(HFSPlusBSDInfo* info) {
FLIPENDIAN(info->ownerID);
FLIPENDIAN(info->groupID);
FLIPENDIAN(info->fileMode);
FLIPENDIAN(info->special);
}
static inline void flipPoint(Point* point) {
FLIPENDIAN(point->v);
FLIPENDIAN(point->h);
}
static inline void flipRect(Rect* rect) {
FLIPENDIAN(rect->top);
FLIPENDIAN(rect->left);
FLIPENDIAN(rect->bottom);
FLIPENDIAN(rect->right);
}
static inline void flipFolderInfo(FolderInfo* info) {
flipRect(&info->windowBounds);
FLIPENDIAN(info->finderFlags);
flipPoint(&info->location);
}
static inline void flipExtendedFolderInfo(ExtendedFolderInfo* info) {
flipPoint(&info->scrollPosition);
FLIPENDIAN(info->extendedFinderFlags);
FLIPENDIAN(info->putAwayFolderID);
}
static inline void flipFileInfo(FileInfo* info) {
FLIPENDIAN(info->fileType);
FLIPENDIAN(info->fileCreator);
FLIPENDIAN(info->finderFlags);
flipPoint(&info->location);
}
static inline void flipExtendedFileInfo(ExtendedFileInfo* info) {
FLIPENDIAN(info->extendedFinderFlags);
FLIPENDIAN(info->putAwayFolderID);
}
void flipCatalogFolder(HFSPlusCatalogFolder* record) {
FLIPENDIAN(record->recordType);
FLIPENDIAN(record->flags);
FLIPENDIAN(record->valence);
FLIPENDIAN(record->folderID);
FLIPENDIAN(record->createDate);
FLIPENDIAN(record->contentModDate);
FLIPENDIAN(record->attributeModDate);
FLIPENDIAN(record->accessDate);
FLIPENDIAN(record->backupDate);
flipBSDInfo(&record->permissions);
flipFolderInfo(&record->userInfo);
flipExtendedFolderInfo(&record->finderInfo);
FLIPENDIAN(record->textEncoding);
FLIPENDIAN(record->folderCount);
}
void flipCatalogFile(HFSPlusCatalogFile* record) {
FLIPENDIAN(record->recordType);
FLIPENDIAN(record->flags);
FLIPENDIAN(record->fileID);
FLIPENDIAN(record->createDate);
FLIPENDIAN(record->contentModDate);
FLIPENDIAN(record->attributeModDate);
FLIPENDIAN(record->accessDate);
FLIPENDIAN(record->backupDate);
flipBSDInfo(&record->permissions);
flipFileInfo(&record->userInfo);
flipExtendedFileInfo(&record->finderInfo);
FLIPENDIAN(record->textEncoding);
flipForkData(&record->dataFork);
flipForkData(&record->resourceFork);
}
void flipCatalogThread(HFSPlusCatalogThread* record, int out) {
int i;
int nameLength;
FLIPENDIAN(record->recordType);
FLIPENDIAN(record->parentID);
if(out) {
nameLength = record->nodeName.length;
FLIPENDIAN(record->nodeName.length);
} else {
FLIPENDIAN(record->nodeName.length);
nameLength = record->nodeName.length;
}
for(i = 0; i < nameLength; i++) {
if(out) {
if(record->nodeName.unicode[i] == ':') {
record->nodeName.unicode[i] = '/';
}
FLIPENDIAN(record->nodeName.unicode[i]);
} else {
FLIPENDIAN(record->nodeName.unicode[i]);
if(record->nodeName.unicode[i] == '/') {
record->nodeName.unicode[i] = ':';
}
}
}
}
#define UNICODE_START (sizeof(uint16_t) + sizeof(HFSCatalogNodeID) + sizeof(uint16_t))
static void catalogKeyPrint(BTKey* toPrint) {
HFSPlusCatalogKey* key;
key = (HFSPlusCatalogKey*) toPrint;
printf("%d:", key->parentID);
printUnicode(&key->nodeName);
}
static int catalogCompare(BTKey* vLeft, BTKey* vRight) {
HFSPlusCatalogKey* left;
HFSPlusCatalogKey* right;
uint16_t i;
uint16_t cLeft;
uint16_t cRight;
left = (HFSPlusCatalogKey*) vLeft;
right =(HFSPlusCatalogKey*) vRight;
if(left->parentID < right->parentID) {
return -1;
} else if(left->parentID > right->parentID) {
return 1;
} else {
for(i = 0; i < left->nodeName.length; i++) {
if(i >= right->nodeName.length) {
return 1;
} else {
/* ugly hack to support weird : to / conversion on iPhone */
if(left->nodeName.unicode[i] == ':') {
cLeft = '/';
} else {
cLeft = left->nodeName.unicode[i] ;
}
if(right->nodeName.unicode[i] == ':') {
cRight = '/';
} else {
cRight = right->nodeName.unicode[i];
}
if(cLeft < cRight)
return -1;
else if(cLeft > cRight)
return 1;
}
}
if(i < right->nodeName.length) {
return -1;
} else {
/* do a safety check on key length. Otherwise, bad things may happen later on when we try to add or remove with this key */
/*if(left->keyLength == right->keyLength) {
return 0;
} else if(left->keyLength < right->keyLength) {
return -1;
} else {
return 1;
}*/
return 0;
}
}
}
static int catalogCompareCS(BTKey* vLeft, BTKey* vRight) {
HFSPlusCatalogKey* left;
HFSPlusCatalogKey* right;
left = (HFSPlusCatalogKey*) vLeft;
right =(HFSPlusCatalogKey*) vRight;
if(left->parentID < right->parentID) {
return -1;
} else if(left->parentID > right->parentID) {
return 1;
} else {
return FastUnicodeCompare(left->nodeName.unicode, left->nodeName.length, right->nodeName.unicode, right->nodeName.length);
}
}
static BTKey* catalogKeyRead(off_t offset, io_func* io) {
HFSPlusCatalogKey* key;
uint16_t i;
key = (HFSPlusCatalogKey*) malloc(sizeof(HFSPlusCatalogKey));
if(!READ(io, offset, UNICODE_START, key))
return NULL;
FLIPENDIAN(key->keyLength);
FLIPENDIAN(key->parentID);
FLIPENDIAN(key->nodeName.length);
if(!READ(io, offset + UNICODE_START, key->nodeName.length * sizeof(uint16_t), ((unsigned char *)key) + UNICODE_START))
return NULL;
for(i = 0; i < key->nodeName.length; i++) {
FLIPENDIAN(key->nodeName.unicode[i]);
if(key->nodeName.unicode[i] == '/') /* ugly hack that iPhone seems to do */
key->nodeName.unicode[i] = ':';
}
return (BTKey*)key;
}
static int catalogKeyWrite(off_t offset, BTKey* toWrite, io_func* io) {
HFSPlusCatalogKey* key;
uint16_t i;
uint16_t keyLength;
uint16_t nodeNameLength;
keyLength = toWrite->keyLength + sizeof(uint16_t);
key = (HFSPlusCatalogKey*) malloc(keyLength);
memcpy(key, toWrite, keyLength);
nodeNameLength = key->nodeName.length;
FLIPENDIAN(key->keyLength);
FLIPENDIAN(key->parentID);
FLIPENDIAN(key->nodeName.length);
for(i = 0; i < nodeNameLength; i++) {
if(key->nodeName.unicode[i] == ':') /* ugly hack that iPhone seems to do */
key->nodeName.unicode[i] = '/';
FLIPENDIAN(key->nodeName.unicode[i]);
}
if(!WRITE(io, offset, keyLength, key))
return FALSE;
free(key);
return TRUE;
}
static BTKey* catalogDataRead(off_t offset, io_func* io) {
int16_t recordType;
HFSPlusCatalogRecord* record;
uint16_t nameLength;
if(!READ(io, offset, sizeof(int16_t), &recordType))
return NULL;
FLIPENDIAN(recordType); fflush(stdout);
switch(recordType) {
case kHFSPlusFolderRecord:
record = (HFSPlusCatalogRecord*) malloc(sizeof(HFSPlusCatalogFolder));
if(!READ(io, offset, sizeof(HFSPlusCatalogFolder), record))
return NULL;
flipCatalogFolder((HFSPlusCatalogFolder*)record);
break;
case kHFSPlusFileRecord:
record = (HFSPlusCatalogRecord*) malloc(sizeof(HFSPlusCatalogFile));
if(!READ(io, offset, sizeof(HFSPlusCatalogFile), record))
return NULL;
flipCatalogFile((HFSPlusCatalogFile*)record);
break;
case kHFSPlusFolderThreadRecord:
case kHFSPlusFileThreadRecord:
record = (HFSPlusCatalogRecord*) malloc(sizeof(HFSPlusCatalogThread));
if(!READ(io, offset + sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), sizeof(uint16_t), &nameLength))
return NULL;
FLIPENDIAN(nameLength);
if(!READ(io, offset, sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t) + sizeof(uint16_t) + (sizeof(uint16_t) * nameLength), record))
return NULL;
flipCatalogThread((HFSPlusCatalogThread*)record, FALSE);
break;
}
return (BTKey*)record;
}
void ASCIIToUnicode(const char* ascii, HFSUniStr255* unistr) {
int count;
count = 0;
while(ascii[count] != '\0') {
unistr->unicode[count] = ascii[count];
count++;
}
unistr->length = count;
}
HFSPlusCatalogRecord* getRecordByCNID(HFSCatalogNodeID CNID, Volume* volume) {
HFSPlusCatalogKey key;
HFSPlusCatalogThread* thread;
HFSPlusCatalogRecord* record;
int exact;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
key.parentID = CNID;
key.nodeName.length = 0;
thread = (HFSPlusCatalogThread*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
if(thread == NULL) {
return NULL;
}
if(exact == FALSE) {
free(thread);
return NULL;
}
key.parentID = thread->parentID;
key.nodeName = thread->nodeName;
free(thread);
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
if(record == NULL || exact == FALSE)
return NULL;
else
return record;
}
CatalogRecordList* getFolderContents(HFSCatalogNodeID CNID, Volume* volume) {
BTree* tree;
HFSPlusCatalogThread* record;
HFSPlusCatalogKey key;
uint32_t nodeNumber;
int recordNumber;
BTNodeDescriptor* descriptor;
off_t recordOffset;
off_t recordDataOffset;
HFSPlusCatalogKey* currentKey;
CatalogRecordList* list;
CatalogRecordList* lastItem;
CatalogRecordList* item;
tree = volume->catalogTree;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
key.parentID = CNID;
key.nodeName.length = 0;
list = NULL;
record = (HFSPlusCatalogThread*) search(tree, (BTKey*)(&key), NULL, &nodeNumber, &recordNumber);
if(record == NULL)
return NULL;
free(record);
++recordNumber;
while(nodeNumber != 0) {
descriptor = readBTNodeDescriptor(nodeNumber, tree);
while(recordNumber < descriptor->numRecords) {
recordOffset = getRecordOffset(recordNumber, nodeNumber, tree);
currentKey = (HFSPlusCatalogKey*) READ_KEY(tree, recordOffset, tree->io);
recordDataOffset = recordOffset + currentKey->keyLength + sizeof(currentKey->keyLength);
if(currentKey->parentID == CNID) {
item = (CatalogRecordList*) malloc(sizeof(CatalogRecordList));
item->name = currentKey->nodeName;
item->record = (HFSPlusCatalogRecord*) READ_DATA(tree, recordDataOffset, tree->io);
item->next = NULL;
if(list == NULL) {
list = item;
} else {
lastItem->next = item;
}
lastItem = item;
free(currentKey);
} else {
free(currentKey);
free(descriptor);
return list;
}
recordNumber++;
}
nodeNumber = descriptor->fLink;
recordNumber = 0;
free(descriptor);
}
return list;
}
void releaseCatalogRecordList(CatalogRecordList* list) {
CatalogRecordList* next;
while(list) {
next = list->next;
free(list->record);
free(list);
list = next;
}
}
HFSPlusCatalogRecord* getLinkTarget(HFSPlusCatalogRecord* record, HFSCatalogNodeID parentID, HFSPlusCatalogKey *key, Volume* volume) {
io_func* io;
char pathBuffer[1024];
HFSPlusCatalogRecord* toReturn;
if(record->recordType == kHFSPlusFileRecord && (((HFSPlusCatalogFile*)record)->permissions.fileMode & S_IFLNK) == S_IFLNK) {
io = openRawFile(((HFSPlusCatalogFile*)record)->fileID, &(((HFSPlusCatalogFile*)record)->dataFork), record, volume);
READ(io, 0, (((HFSPlusCatalogFile*)record)->dataFork).logicalSize, pathBuffer);
CLOSE(io);
pathBuffer[(((HFSPlusCatalogFile*)record)->dataFork).logicalSize] = '\0';
toReturn = getRecordFromPath3(pathBuffer, volume, NULL, key, TRUE, TRUE, parentID);
free(record);
return toReturn;
} else {
return record;
}
}
HFSPlusCatalogRecord* getRecordFromPath(const char* path, Volume* volume, char **name, HFSPlusCatalogKey* retKey) {
return getRecordFromPath2(path, volume, name, retKey, TRUE);
}
HFSPlusCatalogRecord* getRecordFromPath2(const char* path, Volume* volume, char **name, HFSPlusCatalogKey* retKey, char traverse) {
return getRecordFromPath3(path, volume, name, retKey, TRUE, TRUE, kHFSRootFolderID);
}
HFSPlusCatalogRecord* getRecordFromPath3(const char* path, Volume* volume, char **name, HFSPlusCatalogKey* retKey, char traverse, char returnLink, HFSCatalogNodeID parentID) {
HFSPlusCatalogKey key;
HFSPlusCatalogRecord* record;
char* origPath;
char* myPath;
char* word;
char* pathLimit;
uint32_t realParent;
int exact;
if(path[0] == '\0' || (path[0] == '/' && path[1] == '\0')) {
if(name != NULL)
*name = (char*)path;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
key.parentID = kHFSRootFolderID;
key.nodeName.length = 0;
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
key.parentID = ((HFSPlusCatalogThread*)record)->parentID;
key.nodeName = ((HFSPlusCatalogThread*)record)->nodeName;
free(record);
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
return record;
}
myPath = strdup(path);
origPath = myPath;
record = NULL;
if(path[0] == '/') {
key.parentID = kHFSRootFolderID;
} else {
key.parentID = parentID;
}
pathLimit = myPath + strlen(myPath);
for(word = (char*)strtok(myPath, "/"); word && (word < pathLimit);
word = ((word + strlen(word) + 1) < pathLimit) ? (char*)strtok(word + strlen(word) + 1, "/") : NULL) {
if(name != NULL)
*name = (char*)(path + (word - origPath));
if(record != NULL) {
free(record);
record = NULL;
}
if(word[0] == '\0') {
continue;
}
ASCIIToUnicode(word, &key.nodeName);
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length) + (sizeof(uint16_t) * key.nodeName.length);
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
if(record == NULL || exact == FALSE) {
free(origPath);
if(record != NULL) {
free(record);
}
return NULL;
}
if(traverse) {
if(((word + strlen(word) + 1) < pathLimit) || returnLink) {
record = getLinkTarget(record, key.parentID, &key, volume);
if(record == NULL || exact == FALSE) {
free(origPath);
return NULL;
}
}
}
if(record->recordType == kHFSPlusFileRecord) {
if((word + strlen(word) + 1) >= pathLimit) {
free(origPath);
if(retKey != NULL) {
memcpy(retKey, &key, sizeof(HFSPlusCatalogKey));
}
return record;
} else {
free(origPath);
free(record);
return NULL;
}
}
if(record->recordType != kHFSPlusFolderRecord)
hfs_panic("inconsistent catalog tree!");
realParent = key.parentID;
key.parentID = ((HFSPlusCatalogFolder*)record)->folderID;
}
if(retKey != NULL) {
memcpy(retKey, &key, sizeof(HFSPlusCatalogKey));
retKey->parentID = realParent;
}
free(origPath);
return record;
}
int updateCatalog(Volume* volume, HFSPlusCatalogRecord* catalogRecord) {
HFSPlusCatalogKey key;
HFSPlusCatalogRecord* record;
HFSPlusCatalogFile file;
HFSPlusCatalogFolder folder;
int exact;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
if(catalogRecord->recordType == kHFSPlusFolderRecord) {
key.parentID = ((HFSPlusCatalogFolder*)catalogRecord)->folderID;
} else if(catalogRecord->recordType == kHFSPlusFileRecord) {
key.parentID = ((HFSPlusCatalogFile*)catalogRecord)->fileID;
} else {
/* unexpected */
return FALSE;
}
key.nodeName.length = 0;
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
key.parentID = ((HFSPlusCatalogThread*)record)->parentID;
key.nodeName = ((HFSPlusCatalogThread*)record)->nodeName;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length) + (sizeof(uint16_t) * key.nodeName.length);
free(record);
record = (HFSPlusCatalogRecord*) search(volume->catalogTree, (BTKey*)(&key), &exact, NULL, NULL);
removeFromBTree(volume->catalogTree, (BTKey*)(&key));
switch(record->recordType) {
case kHFSPlusFolderRecord:
memcpy(&folder, catalogRecord, sizeof(HFSPlusCatalogFolder));
flipCatalogFolder(&folder);
free(record);
return addToBTree(volume->catalogTree, (BTKey*)(&key), sizeof(HFSPlusCatalogFolder), (unsigned char *)(&folder));
break;
case kHFSPlusFileRecord:
memcpy(&file, catalogRecord, sizeof(HFSPlusCatalogFile));
flipCatalogFile(&file);
free(record);
return addToBTree(volume->catalogTree, (BTKey*)(&key), sizeof(HFSPlusCatalogFile), (unsigned char *)(&file));
break;
}
return TRUE;
}
int move(const char* source, const char* dest, Volume* volume) {
HFSPlusCatalogRecord* srcRec;
HFSPlusCatalogFolder* srcFolderRec;
HFSPlusCatalogFolder* destRec;
char* destPath;
char* destName;
char* curChar;
char* lastSeparator;
int i;
int threadLength;
HFSPlusCatalogKey srcKey;
HFSPlusCatalogKey destKey;
HFSPlusCatalogThread* thread;
srcRec = getRecordFromPath3(source, volume, NULL, &srcKey, TRUE, FALSE, kHFSRootFolderID);
if(srcRec == NULL) {
free(srcRec);
return FALSE;
}
srcFolderRec = (HFSPlusCatalogFolder*) getRecordByCNID(srcKey.parentID, volume);
if(srcFolderRec == NULL || srcFolderRec->recordType != kHFSPlusFolderRecord) {
free(srcRec);
free(srcFolderRec);
return FALSE;
}
destPath = strdup(dest);
curChar = destPath;
lastSeparator = NULL;
while((*curChar) != '\0') {
if((*curChar) == '/')
lastSeparator = curChar;
curChar++;
}
if(lastSeparator == NULL) {
destRec = (HFSPlusCatalogFolder*) getRecordFromPath("/", volume, NULL, NULL);
destName = destPath;
} else {
destName = lastSeparator + 1;
*lastSeparator = '\0';
destRec = (HFSPlusCatalogFolder*) getRecordFromPath(destPath, volume, NULL, NULL);
if(destRec == NULL || destRec->recordType != kHFSPlusFolderRecord) {
free(destPath);
free(srcRec);
free(destRec);
free(srcFolderRec);
return FALSE;
}
}
removeFromBTree(volume->catalogTree, (BTKey*)(&srcKey));
srcKey.nodeName.length = 0;
if(srcRec->recordType == kHFSPlusFolderRecord) {
srcKey.parentID = ((HFSPlusCatalogFolder*)srcRec)->folderID;
} else if(srcRec->recordType == kHFSPlusFileRecord) {
srcKey.parentID = ((HFSPlusCatalogFile*)srcRec)->fileID;
} else {
/* unexpected */
return FALSE;
}
srcKey.keyLength = sizeof(srcKey.parentID) + sizeof(srcKey.nodeName.length);
removeFromBTree(volume->catalogTree, (BTKey*)(&srcKey));
destKey.nodeName.length = strlen(destName);
threadLength = sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t) + sizeof(uint16_t) + (sizeof(uint16_t) * destKey.nodeName.length);
thread = (HFSPlusCatalogThread*) malloc(threadLength);
thread->reserved = 0;
destKey.parentID = destRec->folderID;
thread->parentID = destKey.parentID;
thread->nodeName.length = destKey.nodeName.length;
for(i = 0; i < destKey.nodeName.length; i++) {
destKey.nodeName.unicode[i] = destName[i];
thread->nodeName.unicode[i] = destName[i];
}
destKey.keyLength = sizeof(uint32_t) + sizeof(uint16_t) + (sizeof(uint16_t) * destKey.nodeName.length);
switch(srcRec->recordType) {
case kHFSPlusFolderRecord:
thread->recordType = kHFSPlusFolderThreadRecord;
flipCatalogFolder((HFSPlusCatalogFolder*)srcRec);
addToBTree(volume->catalogTree, (BTKey*)(&destKey), sizeof(HFSPlusCatalogFolder), (unsigned char *)(srcRec));
break;
case kHFSPlusFileRecord:
thread->recordType = kHFSPlusFileThreadRecord;
flipCatalogFile((HFSPlusCatalogFile*)srcRec);
addToBTree(volume->catalogTree, (BTKey*)(&destKey), sizeof(HFSPlusCatalogFile), (unsigned char *)(srcRec));
break;
}
destKey.nodeName.length = 0;
destKey.parentID = srcKey.parentID;
destKey.keyLength = sizeof(destKey.parentID) + sizeof(destKey.nodeName.length);
flipCatalogThread(thread, TRUE);
addToBTree(volume->catalogTree, (BTKey*)(&destKey), threadLength, (unsigned char *)(thread));
/* adjust valence */
srcFolderRec->valence--;
updateCatalog(volume, (HFSPlusCatalogRecord*) srcFolderRec);
destRec->valence++;
updateCatalog(volume, (HFSPlusCatalogRecord*) destRec);
free(thread);
free(destPath);
free(srcRec);
free(destRec);
free(srcFolderRec);
return TRUE;
}
int removeFile(const char* fileName, Volume* volume) {
HFSPlusCatalogRecord* record;
HFSPlusCatalogKey key;
io_func* io;
HFSPlusCatalogFolder* parentFolder;
record = getRecordFromPath3(fileName, volume, NULL, &key, TRUE, FALSE, kHFSRootFolderID);
if(record != NULL) {
parentFolder = (HFSPlusCatalogFolder*) getRecordByCNID(key.parentID, volume);
if(parentFolder != NULL) {
if(parentFolder->recordType != kHFSPlusFolderRecord) {
ASSERT(FALSE, "parent not folder");
free(parentFolder);
return FALSE;
}
} else {
ASSERT(FALSE, "can't find parent");
return FALSE;
}
if(record->recordType == kHFSPlusFileRecord) {
io = openRawFile(((HFSPlusCatalogFile*)record)->fileID, &((HFSPlusCatalogFile*)record)->dataFork, record, volume);
allocate((RawFile*)io->data, 0);
CLOSE(io);
removeFromBTree(volume->catalogTree, (BTKey*)(&key));
key.nodeName.length = 0;
key.parentID = ((HFSPlusCatalogFile*)record)->fileID;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
removeFromBTree(volume->catalogTree, (BTKey*)(&key));
volume->volumeHeader->fileCount--;
} else {
if(((HFSPlusCatalogFolder*)record)->valence > 0) {
free(record);
free(parentFolder);
ASSERT(FALSE, "folder not empty");
return FALSE;
} else {
removeFromBTree(volume->catalogTree, (BTKey*)(&key));
key.nodeName.length = 0;
key.parentID = ((HFSPlusCatalogFolder*)record)->folderID;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
removeFromBTree(volume->catalogTree, (BTKey*)(&key));
}
parentFolder->folderCount--;
volume->volumeHeader->folderCount--;
}
parentFolder->valence--;
updateCatalog(volume, (HFSPlusCatalogRecord*) parentFolder);
updateVolume(volume);
free(record);
free(parentFolder);
return TRUE;
} else {
free(parentFolder);
ASSERT(FALSE, "cannot find record");
return FALSE;
}
}
int makeSymlink(const char* pathName, const char* target, Volume* volume) {
io_func* io;
HFSPlusCatalogFile* record;
record = (HFSPlusCatalogFile*) getRecordFromPath3(pathName, volume, NULL, NULL, TRUE, FALSE, kHFSRootFolderID);
if(!record) {
newFile(pathName, volume);
record = (HFSPlusCatalogFile*) getRecordFromPath(pathName, volume, NULL, NULL);
if(!record) {
return FALSE;
}
record->permissions.fileMode |= S_IFLNK;
record->userInfo.fileType = kSymLinkFileType;
record->userInfo.fileCreator = kSymLinkCreator;
updateCatalog(volume, (HFSPlusCatalogRecord*) record);
} else {
if(record->recordType != kHFSPlusFileRecord || (((HFSPlusCatalogFile*)record)->permissions.fileMode & S_IFLNK) != S_IFLNK) {
free(record);
return FALSE;
}
}
io = openRawFile(record->fileID, &record->dataFork, (HFSPlusCatalogRecord*) record, volume);
WRITE(io, 0, strlen(target), (void*) target);
CLOSE(io);
free(record);
return TRUE;
}
HFSCatalogNodeID newFolder(const char* pathName, Volume* volume) {
HFSPlusCatalogFolder* parentFolder;
HFSPlusCatalogFolder folder;
HFSPlusCatalogKey key;
HFSPlusCatalogThread thread;
uint32_t newFolderID;
int threadLength;
char* path;
char* name;
char* curChar;
char* lastSeparator;
path = strdup(pathName);
curChar = path;
lastSeparator = NULL;
while((*curChar) != '\0') {
if((*curChar) == '/')
lastSeparator = curChar;
curChar++;
}
if(lastSeparator == NULL) {
parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath("/", volume, NULL, NULL);
name = path;
} else {
name = lastSeparator + 1;
*lastSeparator = '\0';
parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath(path, volume, NULL, NULL);
}
if(parentFolder == NULL || parentFolder->recordType != kHFSPlusFolderRecord) {
free(path);
free(parentFolder);
return FALSE;
}
newFolderID = volume->volumeHeader->nextCatalogID++;
volume->volumeHeader->folderCount++;
folder.recordType = kHFSPlusFolderRecord;
folder.flags = kHFSHasFolderCountMask;
folder.valence = 0;
folder.folderID = newFolderID;
folder.createDate = UNIX_TO_APPLE_TIME(time(NULL));
folder.contentModDate = folder.createDate;
folder.attributeModDate = folder.createDate;
folder.accessDate = folder.createDate;
folder.backupDate = folder.createDate;
folder.permissions.ownerID = parentFolder->permissions.ownerID;
folder.permissions.groupID = parentFolder->permissions.groupID;
folder.permissions.adminFlags = 0;
folder.permissions.ownerFlags = 0;
folder.permissions.fileMode = S_IFDIR | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
folder.permissions.special.iNodeNum = 0;
memset(&folder.userInfo, 0, sizeof(folder.userInfo));
memset(&folder.finderInfo, 0, sizeof(folder.finderInfo));
folder.textEncoding = 0;
folder.folderCount = 0;
key.parentID = parentFolder->folderID;
ASCIIToUnicode(name, &key.nodeName);
key.keyLength = sizeof(key.parentID) + STR_SIZE(key.nodeName);
thread.recordType = kHFSPlusFolderThreadRecord;
thread.reserved = 0;
thread.parentID = parentFolder->folderID;
ASCIIToUnicode(name, &thread.nodeName);
threadLength = sizeof(thread.recordType) + sizeof(thread.reserved) + sizeof(thread.parentID) + STR_SIZE(thread.nodeName);
flipCatalogThread(&thread, TRUE);
flipCatalogFolder(&folder);
ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), sizeof(HFSPlusCatalogFolder), (unsigned char *)(&folder)), "addToBTree");
key.nodeName.length = 0;
key.parentID = newFolderID;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), threadLength, (unsigned char *)(&thread)), "addToBTree");
parentFolder->folderCount++;
parentFolder->valence++;
updateCatalog(volume, (HFSPlusCatalogRecord*) parentFolder);
updateVolume(volume);
free(parentFolder);
free(path);
return newFolderID;
}
HFSCatalogNodeID newFile(const char* pathName, Volume* volume) {
HFSPlusCatalogFolder* parentFolder;
HFSPlusCatalogFile file;
HFSPlusCatalogKey key;
HFSPlusCatalogThread thread;
uint32_t newFileID;
int threadLength;
char* path;
char* name;
char* curChar;
char* lastSeparator;
path = strdup(pathName);
curChar = path;
lastSeparator = NULL;
while((*curChar) != '\0') {
if((*curChar) == '/')
lastSeparator = curChar;
curChar++;
}
if(lastSeparator == NULL) {
parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath("/", volume, NULL, NULL);
name = path;
} else {
name = lastSeparator + 1;
*lastSeparator = '\0';
parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath(path, volume, NULL, NULL);
}
if(parentFolder == NULL || parentFolder->recordType != kHFSPlusFolderRecord) {
free(path);
free(parentFolder);
return FALSE;
}
newFileID = volume->volumeHeader->nextCatalogID++;
volume->volumeHeader->fileCount++;
file.recordType = kHFSPlusFileRecord;
file.flags = kHFSThreadExistsMask;
file.reserved1 = 0;
file.fileID = newFileID;
file.createDate = UNIX_TO_APPLE_TIME(time(NULL));
file.contentModDate = file.createDate;
file.attributeModDate = file.createDate;
file.accessDate = file.createDate;
file.backupDate = file.createDate;
file.permissions.ownerID = parentFolder->permissions.ownerID;
file.permissions.groupID = parentFolder->permissions.groupID;
file.permissions.adminFlags = 0;
file.permissions.ownerFlags = 0;
file.permissions.fileMode = S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
file.permissions.special.iNodeNum = 0;
memset(&file.userInfo, 0, sizeof(file.userInfo));
memset(&file.finderInfo, 0, sizeof(file.finderInfo));
file.textEncoding = 0;
file.reserved2 = 0;
memset(&file.dataFork, 0, sizeof(file.dataFork));
memset(&file.resourceFork, 0, sizeof(file.resourceFork));
key.parentID = parentFolder->folderID;
ASCIIToUnicode(name, &key.nodeName);
key.keyLength = sizeof(key.parentID) + STR_SIZE(key.nodeName);
thread.recordType = kHFSPlusFileThreadRecord;
thread.reserved = 0;
thread.parentID = parentFolder->folderID;
ASCIIToUnicode(name, &thread.nodeName);
threadLength = sizeof(thread.recordType) + sizeof(thread.reserved) + sizeof(thread.parentID) + STR_SIZE(thread.nodeName);
flipCatalogThread(&thread, TRUE);
flipCatalogFile(&file);
ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), sizeof(HFSPlusCatalogFile), (unsigned char *)(&file)), "addToBTree");
key.nodeName.length = 0;
key.parentID = newFileID;
key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), threadLength, (unsigned char *)(&thread)), "addToBTree");
parentFolder->valence++;
updateCatalog(volume, (HFSPlusCatalogRecord*) parentFolder);
updateVolume(volume);
free(parentFolder);
free(path);
return newFileID;
}
int chmodFile(const char* pathName, int mode, Volume* volume) {
HFSPlusCatalogRecord* record;
record = getRecordFromPath(pathName, volume, NULL, NULL);
if(record == NULL) {
return FALSE;
}
if(record->recordType == kHFSPlusFolderRecord) {
((HFSPlusCatalogFolder*)record)->permissions.fileMode = (((HFSPlusCatalogFolder*)record)->permissions.fileMode & 0770000) | mode;
} else if(record->recordType == kHFSPlusFileRecord) {
((HFSPlusCatalogFile*)record)->permissions.fileMode = (((HFSPlusCatalogFolder*)record)->permissions.fileMode & 0770000) | mode;
} else {
return FALSE;
}
updateCatalog(volume, record);
free(record);
return TRUE;
}
int chownFile(const char* pathName, uint32_t owner, uint32_t group, Volume* volume) {
HFSPlusCatalogRecord* record;
record = getRecordFromPath(pathName, volume, NULL, NULL);
if(record == NULL) {
return FALSE;
}
if(record->recordType == kHFSPlusFolderRecord) {
((HFSPlusCatalogFolder*)record)->permissions.ownerID = owner;
((HFSPlusCatalogFolder*)record)->permissions.groupID = group;
} else if(record->recordType == kHFSPlusFileRecord) {
((HFSPlusCatalogFile*)record)->permissions.ownerID = owner;
((HFSPlusCatalogFile*)record)->permissions.groupID = group;
} else {
return FALSE;
}
updateCatalog(volume, record);
free(record);
return TRUE;
}
BTree* openCatalogTree(io_func* file) {
BTree* btree;
btree = openBTree(file, &catalogCompare, &catalogKeyRead, &catalogKeyWrite, &catalogKeyPrint, &catalogDataRead);
if(btree->headerRec->keyCompareType == kHFSCaseFolding) {
btree->compare = &catalogCompareCS;
}
return btree;
}
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