// Read a Section of a DataVault from Disk
static eEsifError DataVault_GetFromSource(
DataVaultPtr self,
void *bufPtr,
UInt32 bytes,
size_t offset
)
{
eEsifError rc = ESIF_OK;
size_t bytesRead = 0;
ESIF_ASSERT(self != NULL);
if (IOStream_Open(self->stream) != 0) {
rc = ESIF_E_IO_ERROR;
goto exit;
}
bytesRead = IOStream_ReadAt(self->stream, bufPtr, bytes, offset);
if (bytesRead != bytes) {
rc = ESIF_E_IO_ERROR;
}
exit:
IOStream_Close(self->stream);
return rc;
}
// Read DataVault from Disk
eEsifError DataVault_ReadVault(DataVaultPtr self)
{
eEsifError rc = ESIF_OK;
IOStreamPtr memStreamPtr = NULL;
IOStreamPtr orgStreamPtr = NULL;
DataVaultHeader header = {0};
UInt32 hdrSize = 0;
UInt32 min_version = 0;
UInt32 max_version = 0;
orgStreamPtr = self->stream;
// Read the file into a memory stream for faster accesses (hash, size, etc.)
rc = IOStream_CloneAsMemoryStream(self->stream, &memStreamPtr);
if (rc != ESIF_OK) {
goto exit;
}
self->stream = memStreamPtr;
// Read in the header
rc = DataVault_ReadHeader(self, &header);
if (rc != ESIF_OK) {
goto exit;
}
hdrSize = header.headersize;
if (hdrSize < sizeof(header)) {
rc = ESIF_E_NOT_SUPPORTED;
goto exit;
}
// Verify signature
if (memcmp(header.signature, ESIFDV_SIGNATURE, sizeof(header.signature)) != 0) {
rc = ESIF_E_NOT_SUPPORTED;
goto exit;
}
// The DataVault's Major.Minor Version must be <= the App's Major.Minor Version and at least Major.1
min_version = ESIFDV_VERSION(ESIFDV_MAJOR_VERSION_MIN, 0, 0);
max_version = ESIFDV_VERSION(ESIFDV_MAJOR_VERSION, ESIFDV_MINOR_VERSION, ESIFDV_MAX_REVISION);
if ((header.version > max_version) || (header.version < min_version)) {
rc = ESIF_E_NOT_SUPPORTED;
goto exit;
}
// Save the header flags and version
self->flags = header.flags;
self->version = header.version;
rc = DataVault_ReadPayload(self);
exit:
IOStream_Close(self->stream);
self->stream = orgStreamPtr; // Restore the original stream
//esif_ccb_free(dataHdrsPtr);
IOStream_Destroy(memStreamPtr);
return rc;
}
// Read the data vault header
static eEsifError DataVault_ReadHeader(
DataVaultPtr self,
DataVaultHeaderPtr headerPtr
)
{
eEsifError rc = ESIF_OK;
size_t bytesRead = 0;
ESIF_ASSERT(self != NULL);
ESIF_ASSERT(headerPtr != NULL);
if (IOStream_Open(self->stream) != 0) {
goto exit;
}
bytesRead = IOStream_ReadAt(self->stream, headerPtr, sizeof(*headerPtr), 0);
if (bytesRead != sizeof(*headerPtr)) {
rc = ESIF_E_IO_ERROR;
}
exit:
IOStream_Close(self->stream);
return rc;
}
// Read a Section of a DataVault from Disk
static eEsifError DataVault_ReadBlock (
DataVaultPtr self,
void *buf_ptr,
UInt32 buf_len,
size_t offset
)
{
eEsifError rc = ESIF_E_NOT_FOUND; // TODO
IOStreamPtr vault = self->stream;
// Open DB File or Memory Block
if (IOStream_Open(vault) != 0) {
return rc;
}
// Seek and Read Buffer
if (IOStream_Seek(vault, (long)offset, SEEK_SET) == 0 && IOStream_Read(vault, buf_ptr, buf_len) == buf_len) {
rc = ESIF_OK;
}
IOStream_Close(vault);
return rc;
}
// Send DSP
enum esif_rc esif_send_dsp(
char *filename,
u8 dstId
)
{
enum esif_rc rc = ESIF_OK;
int edpSize = 512;
int cmdSize = 0;
struct esif_ipc *ipcPtr = NULL;
struct esif_ipc_command *commandPtr = NULL;
struct esif_command_send_dsp *dspCommandPtr = NULL;
struct edp_dir edpDir;
size_t bytesRead;
char *edpName = 0;
IOStreamPtr ioPtr = IOStream_Create();
EsifDataPtr nameSpace = 0;
EsifDataPtr key = 0;
EsifDataPtr value = 0;
if (ioPtr == NULL) {
ESIF_TRACE_ERROR("Fail to create IOStream\n");
rc = ESIF_E_NO_MEMORY;
goto exit;
}
//
// If we have a filename provided use the contents of the file as the CPC
// note this is opaque it is up to the receiver to verify that this is in fact
// a CPC.
//
if (NULL == filename) {
ESIF_TRACE_ERROR("Filename is null\n");
rc = ESIF_E_PARAMETER_IS_NULL;
goto exit;
}
// Use name portion of filename for the DataVault key (C:\path\file.edp = file.edp)
edpName = strrchr(filename, *ESIF_PATH_SEP);
edpName = (edpName ? ++edpName : filename);
nameSpace = EsifData_CreateAs(ESIF_DATA_STRING, ESIF_DSP_NAMESPACE, 0, ESIFAUTOLEN);
key = EsifData_CreateAs(ESIF_DATA_STRING, edpName, 0, ESIFAUTOLEN);
value = EsifData_CreateAs(ESIF_DATA_AUTO, NULL, ESIF_DATA_ALLOCATE, 0);
if (nameSpace == NULL || key == NULL || value == NULL) {
rc = ESIF_E_NO_MEMORY;
goto exit;
}
// Look for EDP file on disk first then DataVault (static or file)
if (!esif_ccb_file_exists(filename) && EsifConfigGet(nameSpace, key, value) == ESIF_OK) {
filename = edpName;
IOStream_SetMemory(ioPtr, (BytePtr)value->buf_ptr, value->data_len);
} else {
IOStream_SetFile(ioPtr, filename, (char *)"rb");
}
/* FIND CPC within EDP file */
if (IOStream_Open(ioPtr) != 0) {
ESIF_TRACE_ERROR("File not found (%s)\n", filename);
rc = ESIF_E_IO_OPEN_FAILED;
goto exit;
}
bytesRead = IOStream_Read(ioPtr, &edpDir, sizeof(struct edp_dir));
if (!esif_verify_edp(&edpDir, bytesRead)) {
ESIF_TRACE_ERROR("Invalid EDP Header: Signature=%4.4s Version=%d\n", (char *)&edpDir.signature, edpDir.version);
rc = ESIF_E_NOT_SUPPORTED;
goto exit;
}
edpSize = edpDir.fpc_offset - edpDir.cpc_offset;
IOStream_Seek(ioPtr, edpDir.cpc_offset, SEEK_SET);
if (edpSize > MAX_EDP_SIZE) {
ESIF_TRACE_ERROR("The edp size %d is larger than maximum edp size\n", edpSize);
rc = -ESIF_E_UNSPECIFIED;
goto exit;
}
cmdSize = edpSize + sizeof(*dspCommandPtr);
ipcPtr = esif_ipc_alloc_command(&commandPtr, cmdSize);
if (NULL == ipcPtr || NULL == commandPtr) {
ESIF_TRACE_ERROR("Fail to allocate esif_ipc/esif_ipc_command\n");
rc = ESIF_E_NO_MEMORY;
goto exit;
}
commandPtr->type = ESIF_COMMAND_TYPE_SEND_DSP;
commandPtr->req_data_type = ESIF_DATA_STRUCTURE;
commandPtr->req_data_offset = 0;
commandPtr->req_data_len = cmdSize;
commandPtr->rsp_data_type = ESIF_DATA_VOID;
commandPtr->rsp_data_offset = 0;
commandPtr->rsp_data_len = 0;
dspCommandPtr = (struct esif_command_send_dsp *)(commandPtr + 1);
dspCommandPtr->id = dstId;
dspCommandPtr->data_len = edpSize;
bytesRead = IOStream_Read(ioPtr, dspCommandPtr + 1, edpSize);
ESIF_TRACE_DEBUG("loaded file %s bytes %d\n", filename, (int)bytesRead);
ESIF_TRACE_INFO("CPC file %s(%d) sent to participant %d\n", filename, edpSize, dstId);
ipc_execute(ipcPtr);
if (ESIF_OK != ipcPtr->return_code) {
ESIF_TRACE_ERROR("ipc error code = %s(%d)\n", esif_rc_str(ipcPtr->return_code), ipcPtr->return_code);
rc = ipcPtr->return_code;
goto exit;
}
rc = commandPtr->return_code;
if ((rc != ESIF_OK) && (rc != ESIF_E_DSP_ALREADY_LOADED)) {
ESIF_TRACE_ERROR("primitive error code = %s(%d)\n", esif_rc_str(commandPtr->return_code), commandPtr->return_code);
goto exit;
}
exit:
if (NULL != ipcPtr) {
esif_ipc_free(ipcPtr);
}
if (NULL != ioPtr) {
IOStream_Close(ioPtr);
IOStream_Destroy(ioPtr);
}
EsifData_Destroy(nameSpace);
EsifData_Destroy(key);
EsifData_Destroy(value);
return rc;
}
static eEsifError DataVault_ReadPayload(DataVaultPtr self)
{
eEsifError rc = ESIF_OK;
IOStreamPtr streamPtr = NULL;
int vrc = EPERM;
size_t fileOffset = 0;
size_t curFileOffset = 0;
size_t pairSize = 0;
esif_flags_t item_flags = 0;
EsifData key = { ESIF_DATA_STRING };
EsifData value = { ESIF_DATA_VOID };
ESIF_ASSERT(self != NULL);
streamPtr = self->stream;
// Open File or Memory Block
if ((vrc = IOStream_Open(streamPtr)) != 0) {
if (vrc == ENOENT) {
rc = ESIF_E_NOT_FOUND;
}
else {
rc = ESIF_E_IO_OPEN_FAILED;
}
goto exit;
}
// Move the file pointer to start of data
fileOffset = sizeof(DataVaultHeader);
if (IOStream_Seek(streamPtr, fileOffset, SEEK_SET) != EOK) {
rc = ESIF_E_IO_ERROR;
goto exit;
}
// Read Data and add to DataVault
while (rc == ESIF_OK) {
EsifData_ctor(&key);
EsifData_ctor(&value);
item_flags = 0;
rc = DataVault_ReadNextKeyValuePair(self, &item_flags, &key, &value);
if (rc != ESIF_OK) {
if (ESIF_E_ITERATION_DONE == rc) {
rc = ESIF_OK;
}
break;
}
// Validate that the data read is from within the region specified by the header
curFileOffset = IOStream_GetOffset(streamPtr);
pairSize = curFileOffset - fileOffset;
fileOffset = curFileOffset;
// Add value (including allocated buf_ptr) to cache
DataCache_InsertValue(self->cache, (esif_string)key.buf_ptr, &value, item_flags);
EsifData_dtor(&key);
EsifData_dtor(&value);
}
exit:
IOStream_Close(streamPtr);
EsifData_dtor(&key);
EsifData_dtor(&value);
return rc;
}
// Read DataVault from Disk
eEsifError DataVault_ReadVault (DataVaultPtr self)
{
eEsifError rc = ESIF_E_UNSPECIFIED; // TODO
int vrc = EPERM;
DataVaultHeader header;
UInt32 min_version;
UInt32 max_version;
esif_flags_t item_flags;
IOStreamPtr vault = self->stream;
// TODO: Locking
// Open File or Memory Block
if ((vrc = IOStream_Open(vault)) != 0) {
if (vrc == ENOENT) {
rc = ESIF_E_NOT_FOUND;
}
return rc;
}
// Read and Verify File Header
// The DataVault's Major.Minor Version must be <= the App's Major.Minor Version and at least Major.0
memset(&header, 0, sizeof(header));
IOStream_Read(vault, &header, 4); // E51F#### where #### is header size, including this
IOStream_Read(vault, ((UInt8*)&header) + 4, esif_ccb_min(header.headersize, sizeof(header)) - 4);
min_version = ESIFDV_VERSION(ESIFDV_MAJOR_VERSION, 0, 0);
max_version = ESIFDV_VERSION(ESIFDV_MAJOR_VERSION, ESIFDV_MINOR_VERSION, ESIFDV_MAX_REVISION);
if (memcmp(header.signature, ESIFDV_SIGNATURE, sizeof(header.signature)) != 0 || header.version > max_version || header.version < min_version) {
IOStream_Close(vault);
return ESIF_E_NOT_SUPPORTED;
}
if (header.headersize > sizeof(header)) {
IOStream_Seek(vault, header.headersize - sizeof(header), SEEK_CUR);
}
self->flags = header.flags;
if (IOStream_GetType(vault) == StreamMemory) {
self->flags |= ESIF_SERVICE_CONFIG_STATIC;
}
rc = ESIF_OK;
// Read Data and add to DataVault
while (IOStream_Read(vault, &item_flags, sizeof(item_flags)) == sizeof(item_flags)) {
EsifData key;
EsifData value;
// Read Key
EsifData_ctor(&key);
EsifData_ctor(&value);
key.type = ESIF_DATA_STRING;
IOStream_Read(vault, &key.data_len, sizeof(key.data_len));
if (key.data_len > MAX_DV_DATALEN) {
rc = ESIF_E_PARAMETER_IS_OUT_OF_BOUNDS;
break;
}
switch (IOStream_GetType(vault)) {
case StreamMemory:
key.buf_len = 0;
key.buf_ptr = IOStream_GetMemoryBuffer(vault) + IOStream_GetOffset(vault);
IOStream_Seek(vault, key.data_len, SEEK_CUR);
item_flags &= ~ESIF_SERVICE_CONFIG_NOCACHE; // ignore for Memory Vaults
break;
case StreamFile:
default:
key.buf_len = key.data_len;
key.buf_ptr = esif_ccb_malloc(key.buf_len);
if (!key.buf_ptr) {
rc = ESIF_E_NO_MEMORY;
break;
}
IOStream_Read(vault, key.buf_ptr, key.data_len);
((esif_string)(key.buf_ptr))[key.data_len - 1] = 0;
break;
}
if (rc != ESIF_OK) {
EsifData_dtor(&key);
break;
}
// Read Value
IOStream_Read(vault, &value.type, sizeof(value.type));
IOStream_Read(vault, &value.data_len, sizeof(value.data_len));
if (value.data_len > MAX_DV_DATALEN) {
EsifData_dtor(&key);
break;
}
// If NOCACHE mode, use buf_ptr to store the file offset of the data and skip the file
if (item_flags & ESIF_SERVICE_CONFIG_NOCACHE) {
size_t offset = IOStream_GetOffset(vault);
IOStream_Seek(vault, value.data_len, SEEK_CUR);
value.buf_ptr = (void*)offset;
value.buf_len = 0; // data_len = original length
} else {
// Use static pointer for static data vaults (unless encrypted), otherwise make a dynamic copy
if (IOStream_GetType(vault) == StreamMemory && !(item_flags & ESIF_SERVICE_CONFIG_ENCRYPT)) {
value.buf_len = 0; // static
value.buf_ptr = IOStream_GetMemoryBuffer(vault) + IOStream_GetOffset(vault);
IOStream_Seek(vault, value.data_len, SEEK_CUR);
} else {
value.buf_len = value.data_len; // dynamic
value.buf_ptr = esif_ccb_malloc(value.buf_len);
if (!value.buf_ptr) {
EsifData_dtor(&key);
rc = ESIF_E_NO_MEMORY;
break;
}
IOStream_Read(vault, value.buf_ptr, value.data_len);
}
// Decrypt Encrypted Data?
if (item_flags & ESIF_SERVICE_CONFIG_ENCRYPT) {
UInt32 byte;
for (byte = 0; byte < value.data_len; byte++)
((UInt8*)(value.buf_ptr))[byte] = ~((UInt8*)(value.buf_ptr))[byte];
}
}
// Add value (including allocated buf_ptr) to cache
DataCache_SetValue(self->cache, (esif_string)key.buf_ptr, value, item_flags);
value.buf_ptr = 0;
item_flags = 0;
EsifData_dtor(&key);
EsifData_dtor(&value);
}
IOStream_Close(vault);
return rc;
}
// Write DataVault to Disk
eEsifError DataVault_WriteVault (DataVaultPtr self)
{
eEsifError rc = ESIF_E_NOT_FOUND;
DataVaultHeader header;
struct esif_ccb_file dv_file = {0};
struct esif_ccb_file dv_filebak = {0};
IOStreamPtr vault = 0;
IOStreamPtr vaultBak = 0;
u32 idx;
if (FLAGS_TEST(self->flags, ESIF_SERVICE_CONFIG_STATIC | ESIF_SERVICE_CONFIG_READONLY)) {
return ESIF_E_READONLY;
}
// TODO: Locking
vault = IOStream_Create();
if (!vault) {
return ESIF_E_NO_MEMORY;
}
// If any rows contain NOCACHE PERSIST values, we need to make a copy the original DataVault while creating the new one
// esif_ccb_sprintf(MAX_PATH, dv_file.filename, "%s%s", esif_build_path(dv_file.filename, MAX_PATH, NULL, self->name), ESIFDV_FILEEXT);
esif_ccb_sprintf(MAX_PATH, dv_file.filename, "%s%s%s", ESIFDV_DIR, self->name, ESIFDV_FILEEXT);
for (idx = 0; idx < self->cache->size; idx++)
if (FLAGS_TESTALL(self->cache->elements[idx].flags, ESIF_SERVICE_CONFIG_NOCACHE | ESIF_SERVICE_CONFIG_PERSIST) &&
self->cache->elements[idx].value.buf_len == 0) {
struct stat filebak_stat = {0};
esif_ccb_sprintf(MAX_PATH, dv_filebak.filename, "%s%s%s", ESIFDV_DIR, self->name, ESIFDV_BAKFILEEXT);
// Delete BAK file if it exists
if (esif_ccb_stat(dv_filebak.filename, &filebak_stat) == 0) {
esif_ccb_unlink(dv_filebak.filename);
}
if (esif_ccb_rename(dv_file.filename, dv_filebak.filename) == 0) {
if ((vaultBak = IOStream_Create()) == NULL) {
rc = ESIF_E_NO_MEMORY;
}
if (!vaultBak || IOStream_OpenFile(vaultBak, dv_filebak.filename, "rb") != 0) {
IOStream_Destroy(vault);
IOStream_Destroy(vaultBak);
return rc;
}
}
break;
}
// Create DataVault, Overwrite if necessary
IOStream_SetFile(vault, self->stream->file.name, "wb");
if (IOStream_Open(vault) != 0) {
if (vaultBak) {
IOStream_Destroy(vaultBak);
esif_ccb_unlink(dv_filebak.filename);
}
IOStream_Destroy(vault);
return rc;
}
// Create File Header
memset(&header, 0, sizeof(header));
esif_ccb_memcpy(&header.signature, ESIFDV_SIGNATURE, sizeof(header.signature));
header.headersize = sizeof(header);
header.version = ESIFDV_VERSION(ESIFDV_MAJOR_VERSION, ESIFDV_MINOR_VERSION, ESIFDV_REVISION);
header.flags = 0; // TODO: get from self->flags
// Write File Header
IOStream_Seek(vault, 0, SEEK_SET);
IOStream_Write(vault, &header, sizeof(header));
rc = ESIF_OK;
// Write All Persisted Rows from Sorted List to DataVault
for (idx = 0; idx < self->cache->size; idx++) {
DataCacheEntryPtr keypair = &self->cache->elements[idx];
if (keypair->flags & ESIF_SERVICE_CONFIG_PERSIST) {
UInt8 *buffer = 0;
UInt32 buffer_len = 0;
UInt32 byte = 0;
IOStream_Write(vault, &keypair->flags, sizeof(keypair->flags));
IOStream_Write(vault, &keypair->key.data_len, sizeof(keypair->key.data_len));
IOStream_Write(vault, keypair->key.buf_ptr, keypair->key.data_len);
IOStream_Write(vault, &keypair->value.type, sizeof(keypair->value.type));
IOStream_Write(vault, &keypair->value.data_len, sizeof(keypair->value.data_len));
// Read NOCACHE Entries from Backup file
if (keypair->flags & ESIF_SERVICE_CONFIG_NOCACHE) {
size_t offset = IOStream_GetOffset(vault);
// Read Block from BAK file
if (keypair->value.buf_len == 0) {
size_t bakoffset = (size_t)keypair->value.buf_ptr;
buffer = (UInt8*)esif_ccb_malloc(keypair->value.data_len);
buffer_len = keypair->value.data_len;
if (!buffer) {
rc = ESIF_E_NO_MEMORY;
break;
}
if (IOStream_Seek(vaultBak, bakoffset, SEEK_SET) != 0 || IOStream_Read(vaultBak, buffer, buffer_len) != buffer_len) {
esif_ccb_free(buffer);
rc = ESIF_E_UNSPECIFIED;// TODO: ESIF_E_IOERROR;
break;
}
keypair->value.buf_ptr = (void*)offset;
}
// Convert internal storage to NOCACHE
else {
buffer = (UInt8*)keypair->value.buf_ptr;
buffer_len = keypair->value.data_len;
keypair->value.buf_ptr = (void*)offset;
keypair->value.buf_len = 0;
}
}
// Encrypt Data?
if (keypair->flags & ESIF_SERVICE_CONFIG_ENCRYPT) {
if (!buffer) {
buffer = (UInt8*)esif_ccb_malloc(keypair->value.data_len);
buffer_len = keypair->value.data_len;
if (!buffer) {
rc = ESIF_E_NO_MEMORY;
break;
}
}
for (byte = 0; byte < keypair->value.data_len; byte++)
buffer[byte] = ~((UInt8*)(keypair->value.buf_ptr))[byte];
}
if (buffer) {
IOStream_Write(vault, buffer, buffer_len);
esif_ccb_free(buffer);
} else {
IOStream_Write(vault, keypair->value.buf_ptr, keypair->value.data_len);
}
}
}
// Rollback on Error
if (rc != ESIF_OK) {
IOStream_Destroy(vaultBak);
IOStream_Destroy(vault);
esif_ccb_unlink(dv_file.filename);
IGNORE_RESULT(esif_ccb_rename(dv_filebak.filename, dv_file.filename));
return rc;
}
// Remove BAK file and Commit
if (vaultBak) {
IOStream_Close(vaultBak);
esif_ccb_unlink(dv_filebak.filename);
IOStream_Destroy(vaultBak);
}
IOStream_Close(vault);
IOStream_Destroy(vault);
return rc;
}