hacks/dump-imessages/iphone-dataprotection/emf_decrypter/hfs/hfslib.c

724 lines
19 KiB
C
Raw Normal View History

#include <string.h>
#include <unistd.h>
#include <dirent.h>
#include <time.h>
#include <sys/types.h>
#include "common.h"
#include <hfs/hfsplus.h>
#include <hfs/hfscompress.h>
#include "abstractfile.h"
#include <sys/stat.h>
#include <inttypes.h>
#define BUFSIZE 1024*1024
static int silence = 0;
void hfs_setsilence(int s) {
silence = s;
}
void writeToFile(HFSPlusCatalogFile* file, AbstractFile* output, Volume* volume) {
unsigned char* buffer;
io_func* io;
off_t curPosition;
size_t bytesLeft;
buffer = (unsigned char*) malloc(BUFSIZE);
if(file->permissions.ownerFlags & UF_COMPRESSED) {
io = openHFSPlusCompressed(volume, file);
if(io == NULL) {
hfs_panic("error opening file");
free(buffer);
return;
}
curPosition = 0;
bytesLeft = ((HFSPlusCompressed*) io->data)->decmpfs->size;
} else {
io = openRawFile(file->fileID, &file->dataFork, (HFSPlusCatalogRecord*)file, volume);
if(io == NULL) {
hfs_panic("error opening file");
free(buffer);
return;
}
curPosition = 0;
bytesLeft = file->dataFork.logicalSize;
}
while(bytesLeft > 0) {
if(bytesLeft > BUFSIZE) {
if(!READ(io, curPosition, BUFSIZE, buffer)) {
hfs_panic("error reading");
}
if(output->write(output, buffer, BUFSIZE) != BUFSIZE) {
hfs_panic("error writing");
}
curPosition += BUFSIZE;
bytesLeft -= BUFSIZE;
} else {
if(!READ(io, curPosition, bytesLeft, buffer)) {
hfs_panic("error reading");
}
if(output->write(output, buffer, bytesLeft) != bytesLeft) {
hfs_panic("error writing");
}
curPosition += bytesLeft;
bytesLeft -= bytesLeft;
}
}
CLOSE(io);
free(buffer);
}
void writeToHFSFile(HFSPlusCatalogFile* file, AbstractFile* input, Volume* volume) {
unsigned char *buffer;
io_func* io;
off_t curPosition;
off_t bytesLeft;
buffer = (unsigned char*) malloc(BUFSIZE);
bytesLeft = input->getLength(input);
if(file->permissions.ownerFlags & UF_COMPRESSED) {
io = openHFSPlusCompressed(volume, file);
if(io == NULL) {
hfs_panic("error opening file");
free(buffer);
return;
}
} else {
io = openRawFile(file->fileID, &file->dataFork, (HFSPlusCatalogRecord*)file, volume);
if(io == NULL) {
hfs_panic("error opening file");
free(buffer);
return;
}
allocate((RawFile*)io->data, bytesLeft);
}
curPosition = 0;
while(bytesLeft > 0) {
if(bytesLeft > BUFSIZE) {
if(input->read(input, buffer, BUFSIZE) != BUFSIZE) {
hfs_panic("error reading");
}
if(!WRITE(io, curPosition, BUFSIZE, buffer)) {
hfs_panic("error writing");
}
curPosition += BUFSIZE;
bytesLeft -= BUFSIZE;
} else {
if(input->read(input, buffer, (size_t)bytesLeft) != (size_t)bytesLeft) {
hfs_panic("error reading");
}
if(!WRITE(io, curPosition, (size_t)bytesLeft, buffer)) {
hfs_panic("error reading");
}
curPosition += bytesLeft;
bytesLeft -= bytesLeft;
}
}
CLOSE(io);
free(buffer);
}
void get_hfs(Volume* volume, const char* inFileName, AbstractFile* output) {
HFSPlusCatalogRecord* record;
record = getRecordFromPath(inFileName, volume, NULL, NULL);
if(record != NULL) {
if(record->recordType == kHFSPlusFileRecord)
writeToFile((HFSPlusCatalogFile*)record, output, volume);
else {
printf("Not a file\n");
exit(0);
}
} else {
printf("No such file or directory\n");
exit(0);
}
free(record);
}
int add_hfs(Volume* volume, AbstractFile* inFile, const char* outFileName) {
HFSPlusCatalogRecord* record;
int ret;
record = getRecordFromPath(outFileName, volume, NULL, NULL);
if(record != NULL) {
if(record->recordType == kHFSPlusFileRecord) {
writeToHFSFile((HFSPlusCatalogFile*)record, inFile, volume);
ret = TRUE;
} else {
printf("Not a file\n");
exit(0);
}
} else {
if(newFile(outFileName, volume)) {
record = getRecordFromPath(outFileName, volume, NULL, NULL);
writeToHFSFile((HFSPlusCatalogFile*)record, inFile, volume);
ret = TRUE;
} else {
ret = FALSE;
}
}
inFile->close(inFile);
if(record != NULL) {
free(record);
}
return ret;
}
void grow_hfs(Volume* volume, uint64_t newSize) {
uint32_t newBlocks;
uint32_t blocksToGrow;
uint64_t newMapSize;
uint64_t i;
unsigned char zero;
zero = 0;
newBlocks = newSize / volume->volumeHeader->blockSize;
if(newBlocks <= volume->volumeHeader->totalBlocks) {
printf("Cannot shrink volume\n");
return;
}
blocksToGrow = newBlocks - volume->volumeHeader->totalBlocks;
newMapSize = newBlocks / 8;
if(volume->volumeHeader->allocationFile.logicalSize < newMapSize) {
if(volume->volumeHeader->freeBlocks
< ((newMapSize - volume->volumeHeader->allocationFile.logicalSize) / volume->volumeHeader->blockSize)) {
printf("Not enough room to allocate new allocation map blocks\n");
exit(0);
}
allocate((RawFile*) (volume->allocationFile->data), newMapSize);
}
/* unreserve last block */
setBlockUsed(volume, volume->volumeHeader->totalBlocks - 1, 0);
/* don't need to increment freeBlocks because we will allocate another alternate volume header later on */
/* "unallocate" the new blocks */
for(i = ((volume->volumeHeader->totalBlocks / 8) + 1); i < newMapSize; i++) {
ASSERT(WRITE(volume->allocationFile, i, 1, &zero), "WRITE");
}
/* grow backing store size */
ASSERT(WRITE(volume->image, newSize - 1, 1, &zero), "WRITE");
/* write new volume information */
volume->volumeHeader->totalBlocks = newBlocks;
volume->volumeHeader->freeBlocks += blocksToGrow;
/* reserve last block */
setBlockUsed(volume, volume->volumeHeader->totalBlocks - 1, 1);
updateVolume(volume);
}
void removeAllInFolder(HFSCatalogNodeID folderID, Volume* volume, const char* parentName) {
CatalogRecordList* list;
CatalogRecordList* theList;
char fullName[1024];
char* name;
char* pathComponent;
int pathLen;
char isRoot;
HFSPlusCatalogFolder* folder;
theList = list = getFolderContents(folderID, volume);
strcpy(fullName, parentName);
pathComponent = fullName + strlen(fullName);
isRoot = FALSE;
if(strcmp(fullName, "/") == 0) {
isRoot = TRUE;
}
while(list != NULL) {
name = unicodeToAscii(&list->name);
if(isRoot && (name[0] == '\0' || strncmp(name, ".HFS+ Private Directory Data", sizeof(".HFS+ Private Directory Data") - 1) == 0)) {
free(name);
list = list->next;
continue;
}
strcpy(pathComponent, name);
pathLen = strlen(fullName);
if(list->record->recordType == kHFSPlusFolderRecord) {
folder = (HFSPlusCatalogFolder*)list->record;
fullName[pathLen] = '/';
fullName[pathLen + 1] = '\0';
removeAllInFolder(folder->folderID, volume, fullName);
} else {
printf("%s\n", fullName);
removeFile(fullName, volume);
}
free(name);
list = list->next;
}
releaseCatalogRecordList(theList);
if(!isRoot) {
*(pathComponent - 1) = '\0';
printf("%s\n", fullName);
removeFile(fullName, volume);
}
}
void addAllInFolder(HFSCatalogNodeID folderID, Volume* volume, const char* parentName) {
CatalogRecordList* list;
CatalogRecordList* theList;
char cwd[1024];
char fullName[1024];
char testBuffer[1024];
char* pathComponent;
int pathLen;
char* name;
DIR* dir;
DIR* tmp;
HFSCatalogNodeID cnid;
struct dirent* ent;
AbstractFile* file;
HFSPlusCatalogFile* outFile;
strcpy(fullName, parentName);
pathComponent = fullName + strlen(fullName);
ASSERT(getcwd(cwd, 1024) != NULL, "cannot get current working directory");
theList = list = getFolderContents(folderID, volume);
ASSERT((dir = opendir(cwd)) != NULL, "opendir");
while((ent = readdir(dir)) != NULL) {
if(ent->d_name[0] == '.' && (ent->d_name[1] == '\0' || (ent->d_name[1] == '.' && ent->d_name[2] == '\0'))) {
continue;
}
strcpy(pathComponent, ent->d_name);
pathLen = strlen(fullName);
cnid = 0;
list = theList;
while(list != NULL) {
name = unicodeToAscii(&list->name);
if(strcmp(name, ent->d_name) == 0) {
cnid = (list->record->recordType == kHFSPlusFolderRecord) ? (((HFSPlusCatalogFolder*)list->record)->folderID)
: (((HFSPlusCatalogFile*)list->record)->fileID);
free(name);
break;
}
free(name);
list = list->next;
}
if((tmp = opendir(ent->d_name)) != NULL) {
closedir(tmp);
printf("folder: %s\n", fullName); fflush(stdout);
if(cnid == 0) {
cnid = newFolder(fullName, volume);
}
fullName[pathLen] = '/';
fullName[pathLen + 1] = '\0';
ASSERT(chdir(ent->d_name) == 0, "chdir");
addAllInFolder(cnid, volume, fullName);
ASSERT(chdir(cwd) == 0, "chdir");
} else {
printf("file: %s\n", fullName); fflush(stdout);
if(cnid == 0) {
cnid = newFile(fullName, volume);
}
file = createAbstractFileFromFile(fopen(ent->d_name, "rb"));
ASSERT(file != NULL, "fopen");
outFile = (HFSPlusCatalogFile*)getRecordByCNID(cnid, volume);
writeToHFSFile(outFile, file, volume);
file->close(file);
free(outFile);
if(strncmp(fullName, "/Applications/", sizeof("/Applications/") - 1) == 0) {
testBuffer[0] = '\0';
strcpy(testBuffer, "/Applications/");
strcat(testBuffer, ent->d_name);
strcat(testBuffer, ".app/");
strcat(testBuffer, ent->d_name);
if(strcmp(testBuffer, fullName) == 0) {
if(strcmp(ent->d_name, "Installer") == 0
|| strcmp(ent->d_name, "BootNeuter") == 0
) {
printf("Giving setuid permissions to %s...\n", fullName); fflush(stdout);
chmodFile(fullName, 04755, volume);
} else {
printf("Giving permissions to %s\n", fullName); fflush(stdout);
chmodFile(fullName, 0755, volume);
}
}
} else if(strncmp(fullName, "/bin/", sizeof("/bin/") - 1) == 0
|| strncmp(fullName, "/Applications/BootNeuter.app/bin/", sizeof("/Applications/BootNeuter.app/bin/") - 1) == 0
|| strncmp(fullName, "/sbin/", sizeof("/sbin/") - 1) == 0
|| strncmp(fullName, "/usr/sbin/", sizeof("/usr/sbin/") - 1) == 0
|| strncmp(fullName, "/usr/bin/", sizeof("/usr/bin/") - 1) == 0
|| strncmp(fullName, "/usr/libexec/", sizeof("/usr/libexec/") - 1) == 0
|| strncmp(fullName, "/usr/local/bin/", sizeof("/usr/local/bin/") - 1) == 0
|| strncmp(fullName, "/usr/local/sbin/", sizeof("/usr/local/sbin/") - 1) == 0
|| strncmp(fullName, "/usr/local/libexec/", sizeof("/usr/local/libexec/") - 1) == 0
) {
chmodFile(fullName, 0755, volume);
printf("Giving permissions to %s\n", fullName); fflush(stdout);
}
}
}
closedir(dir);
releaseCatalogRecordList(theList);
}
void extractAllInFolder(HFSCatalogNodeID folderID, Volume* volume) {
CatalogRecordList* list;
CatalogRecordList* theList;
char cwd[1024];
char* name;
HFSPlusCatalogFolder* folder;
HFSPlusCatalogFile* file;
AbstractFile* outFile;
struct stat status;
ASSERT(getcwd(cwd, 1024) != NULL, "cannot get current working directory");
theList = list = getFolderContents(folderID, volume);
while(list != NULL) {
name = unicodeToAscii(&list->name);
if(strncmp(name, ".HFS+ Private Directory Data", sizeof(".HFS+ Private Directory Data") - 1) == 0 || name[0] == '\0') {
free(name);
list = list->next;
continue;
}
if(list->record->recordType == kHFSPlusFolderRecord) {
folder = (HFSPlusCatalogFolder*)list->record;
printf("folder: %s\n", name);
if(stat(name, &status) != 0) {
ASSERT(mkdir(name, 0755) == 0, "mkdir");
}
ASSERT(chdir(name) == 0, "chdir");
extractAllInFolder(folder->folderID, volume);
ASSERT(chdir(cwd) == 0, "chdir");
} else if(list->record->recordType == kHFSPlusFileRecord) {
printf("file: %s\n", name);
file = (HFSPlusCatalogFile*)list->record;
outFile = createAbstractFileFromFile(fopen(name, "wb"));
if(outFile != NULL) {
writeToFile(file, outFile, volume);
outFile->close(outFile);
} else {
printf("WARNING: cannot fopen %s\n", name);
}
}
free(name);
list = list->next;
}
releaseCatalogRecordList(theList);
}
void addall_hfs(Volume* volume, const char* dirToMerge, const char* dest) {
HFSPlusCatalogRecord* record;
char* name;
char cwd[1024];
char initPath[1024];
int lastCharOfPath;
ASSERT(getcwd(cwd, 1024) != NULL, "cannot get current working directory");
if(chdir(dirToMerge) != 0) {
printf("Cannot open that directory: %s\n", dirToMerge);
exit(0);
}
record = getRecordFromPath(dest, volume, &name, NULL);
strcpy(initPath, dest);
lastCharOfPath = strlen(dest) - 1;
if(dest[lastCharOfPath] != '/') {
initPath[lastCharOfPath + 1] = '/';
initPath[lastCharOfPath + 2] = '\0';
}
if(record != NULL) {
if(record->recordType == kHFSPlusFolderRecord)
addAllInFolder(((HFSPlusCatalogFolder*)record)->folderID, volume, initPath);
else {
printf("Not a folder\n");
exit(0);
}
} else {
printf("No such file or directory\n");
exit(0);
}
ASSERT(chdir(cwd) == 0, "chdir");
free(record);
}
int copyAcrossVolumes(Volume* volume1, Volume* volume2, char* path1, char* path2) {
void* buffer;
size_t bufferSize;
AbstractFile* tmpFile;
int ret;
buffer = malloc(1);
bufferSize = 0;
tmpFile = createAbstractFileFromMemoryFile((void**)&buffer, &bufferSize);
if(!silence)
{
printf("retrieving... "); fflush(stdout);
}
get_hfs(volume1, path1, tmpFile);
tmpFile->seek(tmpFile, 0);
if(!silence)
{
printf("writing (%ld)... ", (long) tmpFile->getLength(tmpFile)); fflush(stdout);
}
ret = add_hfs(volume2, tmpFile, path2);
if(!silence)
{
printf("done\n");
}
free(buffer);
return ret;
}
void displayFolder(HFSCatalogNodeID folderID, Volume* volume) {
CatalogRecordList* list;
CatalogRecordList* theList;
HFSPlusCatalogFolder* folder;
HFSPlusCatalogFile* file;
time_t fileTime;
struct tm *date;
HFSPlusDecmpfs* compressData;
size_t attrSize;
theList = list = getFolderContents(folderID, volume);
while(list != NULL) {
if(list->record->recordType == kHFSPlusFolderRecord) {
folder = (HFSPlusCatalogFolder*)list->record;
printf("%06o ", folder->permissions.fileMode);
printf("%3d ", folder->permissions.ownerID);
printf("%3d ", folder->permissions.groupID);
printf("%12d ", folder->valence);
fileTime = APPLE_TO_UNIX_TIME(folder->contentModDate);
} else if(list->record->recordType == kHFSPlusFileRecord) {
file = (HFSPlusCatalogFile*)list->record;
printf("%06o ", file->permissions.fileMode);
printf("%3d ", file->permissions.ownerID);
printf("%3d ", file->permissions.groupID);
if(file->permissions.ownerFlags & UF_COMPRESSED) {
attrSize = getAttribute(volume, file->fileID, "com.apple.decmpfs", (uint8_t**)(&compressData));
flipHFSPlusDecmpfs(compressData);
printf("%12" PRId64 " ", compressData->size);
free(compressData);
} else {
printf("%12" PRId64 " ", file->dataFork.logicalSize);
}
fileTime = APPLE_TO_UNIX_TIME(file->contentModDate);
}
date = localtime(&fileTime);
if(date != NULL) {
printf("%2d/%2d/%4d %02d:%02d ", date->tm_mon, date->tm_mday, date->tm_year + 1900, date->tm_hour, date->tm_min);
} else {
printf(" ");
}
printUnicode(&list->name);
printf("\n");
list = list->next;
}
releaseCatalogRecordList(theList);
}
void displayFileLSLine(Volume* volume, HFSPlusCatalogFile* file, const char* name) {
time_t fileTime;
struct tm *date;
HFSPlusDecmpfs* compressData;
printf("%06o ", file->permissions.fileMode);
printf("%3d ", file->permissions.ownerID);
printf("%3d ", file->permissions.groupID);
if(file->permissions.ownerFlags & UF_COMPRESSED) {
getAttribute(volume, file->fileID, "com.apple.decmpfs", (uint8_t**)(&compressData));
flipHFSPlusDecmpfs(compressData);
printf("%12" PRId64 " ", compressData->size);
free(compressData);
} else {
printf("%12" PRId64 " ", file->dataFork.logicalSize);
}
fileTime = APPLE_TO_UNIX_TIME(file->contentModDate);
date = localtime(&fileTime);
if(date != NULL) {
printf("%2d/%2d/%4d %2d:%02d ", date->tm_mon, date->tm_mday, date->tm_year + 1900, date->tm_hour, date->tm_min);
} else {
printf(" ");
}
printf("%s\n", name);
XAttrList* next;
XAttrList* attrs = getAllExtendedAttributes(file->fileID, volume);
if(attrs != NULL) {
printf("Extended attributes\n");
while(attrs != NULL) {
next = attrs->next;
printf("\t%s\n", attrs->name);
free(attrs->name);
free(attrs);
attrs = next;
}
}
}
void hfs_ls(Volume* volume, const char* path) {
HFSPlusCatalogRecord* record;
char* name;
record = getRecordFromPath(path, volume, &name, NULL);
printf("%s: \n", name);
if(record != NULL) {
if(record->recordType == kHFSPlusFolderRecord)
displayFolder(((HFSPlusCatalogFolder*)record)->folderID, volume);
else
displayFileLSLine(volume, (HFSPlusCatalogFile*)record, name);
} else {
printf("No such file or directory\n");
}
printf("Total filesystem size: %d, free: %d\n", (volume->volumeHeader->totalBlocks - volume->volumeHeader->freeBlocks) * volume->volumeHeader->blockSize, volume->volumeHeader->freeBlocks * volume->volumeHeader->blockSize);
free(record);
}
void hfs_untar(Volume* volume, AbstractFile* tarFile) {
size_t tarSize = tarFile->getLength(tarFile);
size_t curRecord = 0;
char block[512];
while(curRecord < tarSize) {
tarFile->seek(tarFile, curRecord);
tarFile->read(tarFile, block, 512);
uint32_t mode = 0;
char* fileName = NULL;
const char* target = NULL;
uint32_t type = 0;
uint32_t size;
uint32_t uid;
uint32_t gid;
sscanf(&block[100], "%o", &mode);
fileName = &block[0];
sscanf(&block[156], "%o", &type);
target = &block[157];
sscanf(&block[124], "%o", &size);
sscanf(&block[108], "%o", &uid);
sscanf(&block[116], "%o", &gid);
if(fileName[0] == '\0')
break;
if(fileName[0] == '.' && fileName[1] == '/') {
fileName += 2;
}
if(fileName[0] == '\0')
goto loop;
if(fileName[strlen(fileName) - 1] == '/')
fileName[strlen(fileName) - 1] = '\0';
HFSPlusCatalogRecord* record = getRecordFromPath3(fileName, volume, NULL, NULL, TRUE, FALSE, kHFSRootFolderID);
if(record) {
if(record->recordType == kHFSPlusFolderRecord || type == 5) {
if(!silence)
printf("ignoring %s, type = %d\n", fileName, type);
free(record);
goto loop;
} else {
printf("replacing %s\n", fileName);
free(record);
removeFile(fileName, volume);
}
}
if(type == 0) {
if(!silence)
printf("file: %s (%04o), size = %d\n", fileName, mode, size);
void* buffer = malloc(size);
tarFile->seek(tarFile, curRecord + 512);
tarFile->read(tarFile, buffer, size);
AbstractFile* inFile = createAbstractFileFromMemory(&buffer, size);
add_hfs(volume, inFile, fileName);
free(buffer);
} else if(type == 5) {
if(!silence)
printf("directory: %s (%04o)\n", fileName, mode);
newFolder(fileName, volume);
} else if(type == 2) {
if(!silence)
printf("symlink: %s (%04o) -> %s\n", fileName, mode, target);
makeSymlink(fileName, target, volume);
}
chmodFile(fileName, mode, volume);
chownFile(fileName, uid, gid, volume);
loop:
curRecord = (curRecord + 512) + ((size + 511) / 512 * 512);
}
}