int _tmain(int argc, _TCHAR* argv[])
{
FILE* f = NULL;
errno_t err = fopen_s(&f, "readme.txt", "rb");
fseek(f, 0, SEEK_END);
int fileSize = ftell(f);
fseek(f, 0, SEEK_SET);
char* source = new char[fileSize];
int bufferLen = fileSize + 300;
char* compressed = new char[bufferLen];
fread(source, fileSize, 1, f);
fclose(f);
size_t length = bufferLen;
snappy_status status = snappy_compress(source, fileSize, compressed, &length);
delete source;
char* uncompressed = new char[bufferLen];
size_t uncompressedLength = bufferLen;
status = snappy_uncompress(compressed, length, uncompressed, &uncompressedLength);
assert(uncompressedLength == fileSize);
delete compressed;
delete uncompressed;
return 0;
}
void ColorTable::serialize(In* in, Out* out)
{
STREAM_REGISTER_BEGIN;
size_t ctUncompressedSize = sizeof(colorTable);
size_t ctCompressedSize = 0;
std::vector<char> ctCompressed;
if(out)
{
ctCompressedSize = snappy_max_compressed_length(ctUncompressedSize);
ctCompressed.resize(ctCompressedSize);
VERIFY(snappy_compress(reinterpret_cast<char*>(&colorTable[0][0][0]), ctUncompressedSize, ctCompressed.data(), &ctCompressedSize) == SNAPPY_OK);
out->write(&ctCompressedSize, sizeof(int));
out->write(ctCompressed.data(), ctCompressedSize);
}
else
{
in->read(&ctCompressedSize, sizeof(int));
ctCompressed.resize(ctCompressedSize);
in->read(ctCompressed.data(), ctCompressedSize);
VERIFY(snappy_uncompress(ctCompressed.data(), ctCompressedSize, reinterpret_cast<char*>(&colorTable[0][0][0]), &ctUncompressedSize) == SNAPPY_OK);
ASSERT(ctUncompressedSize == sizeof(colorTable));
}
STREAM_REGISTER_FINISH;
}
static int
wt_snappy_decompress(WT_COMPRESSOR *compressor, WT_SESSION *session,
uint8_t *src, size_t src_len,
uint8_t *dst, size_t dst_len,
size_t *result_lenp)
{
snappy_status snret;
size_t snaplen;
__UNUSED(compressor);
/* retrieve the saved length */
snaplen = *(size_t *)src;
if (snaplen + sizeof(size_t) > src_len) {
wiredtiger_err_printf(
session,
"wt_snappy_decompress: stored size exceeds buffer size");
return (WT_ERROR);
}
/* dst_len is an input and an output arg. */
snret = snappy_uncompress(
(char *)src + sizeof(size_t), snaplen, (char *)dst, &dst_len);
if (snret == SNAPPY_OK) {
*result_lenp = dst_len;
return (0);
}
return (wt_snappy_error(session, "snappy_decompress", snret));
}
Datum
snappy_decompress_internal(PG_FUNCTION_ARGS)
{
const char *src = PG_GETARG_POINTER(0);
size_t src_sz = PG_GETARG_INT32(1);
char *dst = PG_GETARG_POINTER(2);
int32 dst_sz = PG_GETARG_INT32(3);
int32 *dst_used = PG_GETARG_POINTER(4);
size_t uncompressed_length;
snappy_status retval;
Insist(src_sz > 0 && dst_sz > 0);
retval = snappy_uncompressed_length((char *) src, (size_t) src_sz,
&uncompressed_length);
if (retval != SNAPPY_OK)
elog_snappy_error(retval, "snappy_uncompressed_length",
src_sz, dst_sz, *dst_used);
Insist(dst_sz >= uncompressed_length);
retval = snappy_uncompress((char *) src, src_sz, (char *) dst,
&uncompressed_length);
*dst_used = uncompressed_length;
if (retval != SNAPPY_OK)
elog_snappy_error(retval, "snappy_uncompressed",
src_sz, dst_sz, *dst_used);
PG_RETURN_VOID();
}
/*
* wt_snappy_decompress --
* WiredTiger snappy decompression.
*/
static int
wt_snappy_decompress(WT_COMPRESSOR *compressor, WT_SESSION *session,
uint8_t *src, size_t src_len,
uint8_t *dst, size_t dst_len,
size_t *result_lenp)
{
WT_EXTENSION_API *wt_api;
snappy_status snret;
size_t snaplen;
wt_api = ((SNAPPY_COMPRESSOR *)compressor)->wt_api;
/* retrieve the saved length */
snaplen = *(size_t *)src;
if (snaplen + sizeof(size_t) > src_len) {
(void)wt_api->err_printf(wt_api,
session,
"wt_snappy_decompress: stored size exceeds buffer size");
return (WT_ERROR);
}
/* dst_len is an input and an output arg. */
snret = snappy_uncompress(
(char *)src + sizeof(size_t), snaplen, (char *)dst, &dst_len);
if (snret == SNAPPY_OK) {
*result_lenp = dst_len;
return (0);
}
return (
wt_snappy_error(compressor, session, "snappy_decompress", snret));
}
int pread_compressed(Db *db, off_t pos, char **ret_ptr)
{
char *compressed_buf;
char *new_buf;
int len = pread_bin_internal(db, pos, &compressed_buf, 0);
if (len < 0) {
return len;
}
size_t uncompressed_len;
if (snappy_uncompressed_length(compressed_buf, len, &uncompressed_len) != SNAPPY_OK) {
//should be compressed but snappy doesn't see it as valid.
free(compressed_buf);
return COUCHSTORE_ERROR_CORRUPT;
}
new_buf = (char *) malloc(uncompressed_len);
if (!new_buf) {
free(compressed_buf);
return COUCHSTORE_ERROR_ALLOC_FAIL;
}
snappy_status ss = (snappy_uncompress(compressed_buf, len, new_buf, &uncompressed_len));
free(compressed_buf);
if (ss != SNAPPY_OK) {
return COUCHSTORE_ERROR_CORRUPT;
}
*ret_ptr = new_buf;
return (int) uncompressed_len;
}
static VALUE
snappy_inflate(int argc, VALUE *argv, VALUE self)
{
VALUE src, dst;
size_t output_length;
snappy_status result;
rb_scan_args(argc, argv, "11", &src, &dst);
StringValue(src);
result = snappy_uncompressed_length(RSTRING_PTR(src), RSTRING_LEN(src), &output_length);
if (result != SNAPPY_OK) {
return snappy_raise(result);
}
if (NIL_P(dst)) {
dst = rb_str_new(NULL, output_length);
} else {
StringValue(dst);
rb_str_resize(dst, output_length);
}
result = snappy_uncompress(RSTRING_PTR(src), RSTRING_LEN(src), RSTRING_PTR(dst), &output_length);
if (result != SNAPPY_OK) {
return snappy_raise(result);
}
StringValue(dst);
rb_str_resize(dst, output_length);
return dst;
}
int main(int ac, char **av)
{
int failed = 0, verbose = 0;
struct snappy_env env;
snappy_init_env(&env);
if (av[1] && !strcmp(av[1], "-v")) {
verbose++;
av++;
}
while (*++av) {
size_t size;
char *map = mapfile(*av, O_RDONLY, &size);
if (!map) {
if (size > 0) {
perror(*av);
failed = 1;
}
continue;
}
size_t outlen;
int err;
char *out = xmalloc(snappy_max_compressed_length(size));
char *buf2 = xmalloc(size);
err = snappy_compress(&env, map, size, out, &outlen);
if (err) {
failed = 1;
printf("compression of %s failed: %d\n", *av, err);
goto next;
}
err = snappy_uncompress(out, outlen, buf2);
if (err) {
failed = 1;
printf("uncompression of %s failed: %d\n", *av, err);
goto next;
}
if (memcmp(buf2, map, size)) {
int o = compare(buf2, map, size);
if (o >= 0) {
failed = 1;
printf("final comparision of %s failed at %d of %lu\n",
*av, o, (unsigned long)size);
}
} else {
if (verbose)
printf("%s OK!\n", *av);
}
next:
unmap_file(map, size);
free(out);
free(buf2);
}
return failed;
}
int SnappyImplNative::decompress(u8* in, int inOffset, u8 *out, int outOffset, int len) {
int res = snappy_uncompress((const char*) (in + inOffset), (size_t) len, (char*) (out + outOffset));
if (res != 0) { // not ok
return -res;
} else {
return 0;
}
}
static int foldprint(Db *db, DocInfo *docinfo, void *ctx)
{
int *count = (int *) ctx;
(*count)++;
Doc *doc = NULL;
uint64_t cas;
uint32_t expiry, flags;
if (mode == DumpBySequence) {
printf("Doc seq: %"PRIu64"\n", docinfo->db_seq);
printf(" id: ");
printsb(&docinfo->id);
} else {
printf(" Doc ID: ");
printsb(&docinfo->id);
if (docinfo->db_seq > 0) {
printf(" seq: %"PRIu64"\n", docinfo->db_seq);
}
}
if (docinfo->bp == 0 && docinfo->deleted == 0) {
printf(" ** This b-tree node is corrupt; raw node value follows:*\n");
printf(" raw: ");
printsbhex(&docinfo->rev_meta, 1);
return 0;
}
printf(" rev: %"PRIu64"\n", docinfo->rev_seq);
printf(" content_meta: %d\n", docinfo->content_meta);
if (docinfo->rev_meta.size == sizeof(CouchbaseRevMeta)) {
const CouchbaseRevMeta* meta = (const CouchbaseRevMeta*)docinfo->rev_meta.buf;
cas = decode_raw64(meta->cas);
expiry = decode_raw32(meta->expiry);
flags = decode_raw32(meta->flags);
printf(" cas: %"PRIu64", expiry: %"PRIu32", flags: %"PRIu32"\n", cas, expiry, flags);
}
if (docinfo->deleted) {
printf(" doc deleted\n");
}
couchstore_error_t docerr = couchstore_open_doc_with_docinfo(db, docinfo, &doc, 0);
if(docerr != COUCHSTORE_SUCCESS) {
printf(" could not read document body: %s\n", couchstore_strerror(docerr));
} else if (doc && (docinfo->content_meta & COUCH_DOC_IS_COMPRESSED)) {
size_t rlen;
snappy_uncompressed_length(doc->data.buf, doc->data.size, &rlen);
char *decbuf = (char *) malloc(rlen);
size_t uncompr_len;
snappy_uncompress(doc->data.buf, doc->data.size, decbuf, &uncompr_len);
printf(" data: (snappy) %.*s\n", (int) uncompr_len, decbuf);
free(decbuf);
} else if(doc) {
printf(" data: ");
printsb(&doc->data);
}
couchstore_free_document(doc);
return 0;
}
bool
mongoc_uncompress (int32_t compressor_id,
const uint8_t *compressed,
size_t compressed_len,
uint8_t *uncompressed,
size_t *uncompressed_len)
{
TRACE ("Uncompressing with '%s' (%d)",
mongoc_compressor_id_to_name (compressor_id),
compressor_id);
switch (compressor_id) {
case MONGOC_COMPRESSOR_SNAPPY_ID: {
#ifdef MONGOC_ENABLE_COMPRESSION_SNAPPY
snappy_status status;
status = snappy_uncompress ((const char *) compressed,
compressed_len,
(char *) uncompressed,
uncompressed_len);
return status == SNAPPY_OK;
#else
MONGOC_WARNING ("Received snappy compressed opcode, but snappy "
"compression is not compiled in");
return false;
#endif
break;
}
case MONGOC_COMPRESSOR_ZLIB_ID: {
#ifdef MONGOC_ENABLE_COMPRESSION_ZLIB
int ok;
ok = uncompress (uncompressed,
(unsigned long *) uncompressed_len,
compressed,
compressed_len);
return ok == Z_OK;
#else
MONGOC_WARNING ("Received zlib compressed opcode, but zlib "
"compression is not compiled in");
return false;
#endif
break;
}
case MONGOC_COMPRESSOR_NOOP_ID:
memcpy (uncompressed, compressed, compressed_len);
*uncompressed_len = compressed_len;
return true;
default:
MONGOC_WARNING ("Unknown compressor ID %d", compressor_id);
}
return false;
}
int bp__uncompress(const char* compressed,
size_t compressed_length,
char* uncompressed,
size_t* uncompressed_length) {
int ret = snappy_uncompress(compressed,
compressed_length,
uncompressed,
uncompressed_length);
return ret == SNAPPY_OK ? BP_OK : BP_EDECOMP;
}
primitiveUncompressWithOffset(void)
{
const char*compressed;
size_t compressedLength;
sqInt compressedObj;
size_t inputOffset;
sqInt num;
char* ptr;
snappy_status status;
char* uncompressed;
size_t uncompressedLength;
if (!((interpreterProxy->methodArgumentCount()) == 2)) {
interpreterProxy->primitiveFail(); return;
}
compressedObj = interpreterProxy->stackValue(1);
/* begin charPointerFor: */
if (!(interpreterProxy->isBytes(compressedObj))) {
compressed = ((char*) null);
goto l1;
}
ptr = ((char*) (interpreterProxy->firstIndexableField(compressedObj)));
compressed = ((char*) ptr);
l1: /* end charPointerFor: */;
if (!(compressed)) {
interpreterProxy->primitiveFail(); return;
}
/* begin stackPositiveIntegerValue: */
num = interpreterProxy->stackValue(0);
if ((interpreterProxy->isIntegerValue(num))
&& (num < 0)) {
inputOffset = ((sqInt) null);
goto l2;
}
inputOffset = ((sqInt) (interpreterProxy->positive32BitValueOf(num)));
l2: /* end stackPositiveIntegerValue: */;
compressedLength = interpreterProxy->byteSizeOf(compressedObj);
status = snappy_uncompressed_length(compressed + inputOffset, compressedLength, &uncompressedLength);
if (!(status == 0)) {
interpreterProxy->primitiveFailFor(status); return;
}
uncompressed = malloc(uncompressedLength);
status = snappy_uncompress(compressed + inputOffset, compressedLength, uncompressed, &uncompressedLength);
if (!(status == 0)) {
/* begin returnErrorInfoFor: */
interpreterProxy->pop((interpreterProxy->methodArgumentCount()) + 1);
interpreterProxy->pushInteger(-status);
return;
}
interpreterProxy->pop((interpreterProxy->methodArgumentCount()) + 1);
interpreterProxy->push(oopFromCBytessized(uncompressed, uncompressedLength));
free(uncompressed);
}
static int snp_decompress(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen)
{
size_t ulen;
if (!snappy_uncompressed_length(src, slen, &ulen))
return -EIO;
if (*dlen < ulen)
return -EINVAL;
*dlen = ulen;
return snappy_uncompress(src, slen, dst) ? 0 : -EIO;
}
static SquashStatus
squash_snappy_decompress_buffer (SquashCodec* codec,
size_t* decompressed_length,
uint8_t decompressed[SQUASH_ARRAY_PARAM(*decompressed_length)],
size_t compressed_length,
const uint8_t compressed[SQUASH_ARRAY_PARAM(compressed_length)],
SquashOptions* options) {
snappy_status e;
e = snappy_uncompress ((char*) compressed, compressed_length,
(char*) decompressed, decompressed_length);
return squash_snappy_status (e);
}
int main(int argc, char* argv[])
{
char arch[50];
size_t arch_sz = sizeof(arch);
snappy_status status = snappy_compress("Hello World!", 12, arch, &arch_sz);
if (status != SNAPPY_OK)
printf("compress fail");
char src[50];
size_t src_sz = sizeof(src);
status = snappy_uncompress(arch, arch_sz, src, &src_sz);
if (status != SNAPPY_OK)
return -1;
if (strncmp(src, "Hello, world!", 12) == 0)
return -1;
return 0;
}
static char * decompress_block(size_t input_size, const char *input, size_t *output_size)
{
int input_remaining = (int)input_size;
*output_size = uint32_be(input);
input += 4;
input_remaining -= 4;
int output_remaining = (int)*output_size;
char *output = calloc((size_t)output_remaining, sizeof(char));
char *cursor = output;
while (input_remaining > 0 && output_remaining >= 0) {
size_t compressed_size = uint32_be(input);
input += 4;
input_remaining -= 4;
if (compressed_size == 0) continue;
size_t uncompressed_size = (size_t)output_remaining;
if (snappy_uncompress(
input, compressed_size,
cursor, &uncompressed_size) != SNAPPY_OK) {
goto fail;
}
input += compressed_size;
input_remaining -= compressed_size;
cursor += uncompressed_size;
output_remaining -= uncompressed_size;
}
if (input_remaining == 0 && output_remaining == 0) {
return output;
}
fail:
free(output);
*output_size = 0;
return NULL;
}
static ZEND_FUNCTION(snappy_uncompress)
{
zval *data;
char *output = NULL;
size_t output_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
"z", &data) == FAILURE) {
RETURN_FALSE;
}
if (Z_TYPE_P(data) != IS_STRING) {
zend_error(E_WARNING,
"snappy_uncompress : expects parameter to be string.");
RETURN_FALSE;
}
if (snappy_uncompressed_length(Z_STRVAL_P(data), Z_STRLEN_P(data),
&output_len) != SNAPPY_OK) {
zend_error(E_WARNING, "snappy_uncompress : output length error");
RETURN_FALSE;
}
output = (char *)emalloc(output_len);
if (!output) {
zend_error(E_WARNING, "snappy_uncompress : memory error");
RETURN_FALSE;
}
if (snappy_uncompress(Z_STRVAL_P(data), Z_STRLEN_P(data),
output, &output_len) == SNAPPY_OK) {
#if ZEND_MODULE_API_NO >= 20141001
RETVAL_STRINGL(output, output_len);
#else
RETVAL_STRINGL(output, output_len, 1);
#endif
} else {
zend_error(E_WARNING, "snappy_uncompress : data error");
RETVAL_FALSE;
}
efree(output);
}
primitiveUncompress(void)
{
const char*compressed;
size_t compressedLength;
sqInt compressedObj;
char* ptr;
snappy_status status;
char* uncompressed;
size_t uncompressedLength;
if (!((interpreterProxy->methodArgumentCount()) == 1)) {
interpreterProxy->primitiveFail(); return;
}
compressedObj = interpreterProxy->stackValue(0);
/* begin charPointerFor: */
if (!(interpreterProxy->isBytes(compressedObj))) {
compressed = ((char*) null);
goto l1;
}
ptr = ((char*) (interpreterProxy->firstIndexableField(compressedObj)));
compressed = ((char*) ptr);
l1: /* end charPointerFor: */;
if (!(compressed)) {
interpreterProxy->primitiveFail(); return;
}
compressedLength = interpreterProxy->byteSizeOf(compressedObj);
status = snappy_uncompressed_length(compressed, compressedLength, &uncompressedLength);
if (!(status == 0)) {
interpreterProxy->primitiveFailFor(status); return;
}
uncompressed = malloc(uncompressedLength);
status = snappy_uncompress(compressed, compressedLength, uncompressed, &uncompressedLength);
if (!(status == 0)) {
/* begin returnErrorInfoFor: */
interpreterProxy->pop((interpreterProxy->methodArgumentCount()) + 1);
interpreterProxy->pushInteger(-status);
return;
}
interpreterProxy->pop((interpreterProxy->methodArgumentCount()) + 1);
interpreterProxy->push(oopFromCBytessized(uncompressed, uncompressedLength));
free(uncompressed);
}
CChunkFileReader::Error CChunkFileReader::LoadFile(const std::string &filename, const char *gitVersion, u8 *&_buffer, size_t &sz, std::string *failureReason) {
if (!File::Exists(filename)) {
*failureReason = "LoadStateDoesntExist";
ERROR_LOG(COMMON, "ChunkReader: File doesn't exist");
return ERROR_BAD_FILE;
}
File::IOFile pFile(filename, "rb");
SChunkHeader header;
Error err = LoadFileHeader(pFile, header, nullptr);
if (err != ERROR_NONE) {
return err;
}
// read the state
sz = header.ExpectedSize;
u8 *buffer = new u8[sz];
if (!pFile.ReadBytes(buffer, sz))
{
ERROR_LOG(COMMON, "ChunkReader: Error reading file");
delete [] buffer;
return ERROR_BAD_FILE;
}
_buffer = buffer;
if (header.Compress) {
u8 *uncomp_buffer = new u8[header.UncompressedSize];
size_t uncomp_size = header.UncompressedSize;
snappy_uncompress((const char *)buffer, sz, (char *)uncomp_buffer, &uncomp_size);
if ((u32)uncomp_size != header.UncompressedSize) {
ERROR_LOG(COMMON, "Size mismatch: file: %u calc: %u", header.UncompressedSize, (u32)uncomp_size);
delete [] uncomp_buffer;
return ERROR_BAD_FILE;
}
_buffer = uncomp_buffer;
sz = uncomp_size;
delete [] buffer;
}
return ERROR_NONE;
}
static int decode_snappy(avro_codec_t c, void * data, int64_t len)
{
uint32_t crc;
size_t outlen;
if (snappy_uncompressed_length(data, len-4, &outlen) != SNAPPY_OK) {
avro_set_error("Uncompressed length error in snappy");
return 1;
}
if (!c->block_data) {
c->block_data = avro_malloc(outlen);
c->block_size = outlen;
} else if ( (size_t)c->block_size < outlen) {
c->block_data = avro_realloc(c->block_data, c->block_size, outlen);
c->block_size = outlen;
}
if (!c->block_data)
{
avro_set_error("Cannot allocate memory for snappy");
return 1;
}
if (snappy_uncompress(data, len-4, c->block_data, &outlen) != SNAPPY_OK)
{
avro_set_error("Error uncompressing block with Snappy");
return 1;
}
crc = __bswap_32(crc32(0, c->block_data, outlen));
if (memcmp(&crc, (char*)data+len-4, 4))
{
avro_set_error("CRC32 check failure uncompressing block with Snappy");
return 1;
}
c->used_size = outlen;
return 0;
}
int ness_decompress(const char *src,
uint32_t src_size,
char *dst,
uint32_t dst_size)
{
int ret = NESS_OK;
/* compressed data is NULL */
if (src_size == 1)
return NESS_ERR;
switch (src[0] & 0xF) {
case NESS_NO_COMPRESS:
memcpy(dst, src + 1, src_size - 1);
break;
case NESS_SNAPPY_METHOD: {
int status;
struct snappy_env env;
snappy_init_env(&env);
status = snappy_uncompress(src + 1, src_size - 1, dst);
snappy_free_env(&env);
if (status != 0) {
__ERROR("snappy uncompress error %d", status);
ret = 0;
goto ERR;
}
(void)dst_size;
}
break;
default:
ret = 0;
__ERROR("%s", "no decompress method support!");
break;
}
ERR:
return ret;
}
static sparkey_returncode seekblock(sparkey_logiter *iter, sparkey_logreader *log, uint64_t position) {
iter->block_offset = 0;
if (iter->block_position == position) {
return SPARKEY_SUCCESS;
}
if (log->header.compression_type == SPARKEY_COMPRESSION_NONE) {
iter->compression_buf = &log->data[position];
iter->block_position = position;
iter->next_block_position = log->header.data_end;
iter->block_len = log->data_len - position;
return SPARKEY_SUCCESS;
}
if (log->header.compression_type == SPARKEY_COMPRESSION_SNAPPY) {
uint64_t pos = position;
// TODO: assert that size_t >= uint64_t
size_t compressed_size = read_vlq(log->data, &pos);
uint64_t next_pos = pos + compressed_size;
const char *input = (char *) &log->data[pos];
size_t uncompressed_size = log->header.compression_block_size;
snappy_status status = snappy_uncompress(input, compressed_size, (char *) iter->compression_buf, &uncompressed_size);
switch (status) {
case SNAPPY_OK: break;
case SNAPPY_INVALID_INPUT:
return SPARKEY_INTERNAL_ERROR;
case SNAPPY_BUFFER_TOO_SMALL:
return SPARKEY_INTERNAL_ERROR;
default:
return SPARKEY_INTERNAL_ERROR;
}
iter->block_position = position;
iter->next_block_position = next_pos;
iter->block_len = uncompressed_size;
return SPARKEY_SUCCESS;
}
return SPARKEY_INTERNAL_ERROR;
}
int pread_bin(int fd, off_t pos, char **ret_ptr)
{
char *new_buf;
int len = pread_bin_int(fd, pos, ret_ptr);
if(len < 0)
{
return len;
}
size_t new_len;
if((*ret_ptr)[0] == 1) //Snappy
{
if(snappy_uncompressed_length((*ret_ptr) + 1, len - 1, &new_len)
!= SNAPPY_OK)
{
//marked as compressed but snappy doesn't see it as valid.
free(*ret_ptr);
return -1;
}
new_buf = (char*) malloc(new_len);
snappy_status ss = (snappy_uncompress((*ret_ptr) + 1, len - 1, new_buf, &new_len));
if(ss == SNAPPY_OK)
{
free(*ret_ptr);
*ret_ptr = new_buf;
return new_len;
}
else
{
free(*ret_ptr);
return -1;
}
}
else
{
return len;
}
}
static void hap_decode_chunk(HapChunkDecodeInfo chunks[], unsigned int index)
{
if (chunks)
{
if (chunks[index].compressor == kHapCompressorSnappy)
{
snappy_status snappy_result = snappy_uncompress(chunks[index].compressed_chunk_data,
chunks[index].compressed_chunk_size,
chunks[index].uncompressed_chunk_data,
&chunks[index].uncompressed_chunk_size);
switch (snappy_result)
{
case SNAPPY_INVALID_INPUT:
chunks[index].result = HapResult_Bad_Frame;
break;
case SNAPPY_OK:
chunks[index].result = HapResult_No_Error;
break;
default:
chunks[index].result = HapResult_Internal_Error;
break;
}
}
else if (chunks[index].compressor == kHapCompressorNone)
{
memcpy(chunks[index].uncompressed_chunk_data,
chunks[index].compressed_chunk_data,
chunks[index].compressed_chunk_size);
chunks[index].result = HapResult_No_Error;
}
else
{
chunks[index].result = HapResult_Bad_Frame;
}
}
}
static stream_state_t process_block(FILE *fp, stream_state_t state, block_data_t *bd, char *work, size_t work_len)
{
unsigned int crc32c;
size_t outlen;
switch (state) {
case INITIAL_STATE:
case END_OF_STREAM_STATE:
/* the next block must be a header block. */
if (bd->type != HEADER_TYPE_CODE) {
print_error("Invaid file format\n");
return ERROR_STATE;
}
if (bd->data_len != 6) {
print_error("invalid data length %d for header block\n", bd->data_len);
return ERROR_STATE;
}
if (memcmp(bd->data, "snappy", 6) != 0) {
print_error("invalid file header\n");
return ERROR_STATE;
}
return PROCESSING_STATE;
case PROCESSING_STATE:
switch (bd->type) {
case COMPRESSED_TYPE_CODE:
if (bd->data_len <= 4) {
print_error("too short data length for compressed data block\n");
return ERROR_STATE;
}
crc32c = ((unsigned char)bd->data[0] << 0);
crc32c |= ((unsigned char)bd->data[1] << 8);
crc32c |= ((unsigned char)bd->data[2] << 16);
crc32c |= ((unsigned char)bd->data[3] << 24);
/* uncompress and write */
outlen = work_len;
if (snappy_uncompress(bd->data + 4, bd->data_len - 4, work, &outlen)) {
print_error("Invalid data: RawUncompress failed\n");
return ERROR_STATE;
}
if (crc32c != masked_crc32c(work, outlen)) {
print_error("Invalid data: CRC32c error\n");
return ERROR_STATE;
}
if (fwrite_unlocked(work, outlen, 1, fp) != 1) {
print_error("Failed to write: %s\n", strerror(errno));
return ERROR_STATE;
}
break;
case UNCOMPRESSED_TYPE_CODE:
if (bd->data_len <= 4) {
print_error("too short data length for uncompressed data block\n");
return ERROR_STATE;
}
crc32c = ((unsigned char)bd->data[0] << 0);
crc32c |= ((unsigned char)bd->data[1] << 8);
crc32c |= ((unsigned char)bd->data[2] << 16);
crc32c |= ((unsigned char)bd->data[3] << 24);
if (crc32c != masked_crc32c(bd->data + 4, bd->data_len - 4)) {
print_error("Invalid data: CRC32c error\n");
return ERROR_STATE;
}
if (fwrite_unlocked(bd->data + 4, bd->data_len - 4, 1, fp) != 1) {
print_error("Failed to write: %s\n", strerror(errno));
return ERROR_STATE;
}
break;
case END_OF_STREAM_TYPE_CODE:
if (bd->data_len != 0) {
print_error("invalid data length for end-of-stream block\n");
return ERROR_STATE;
}
return END_OF_STREAM_STATE;
case HEADER_TYPE_CODE:
print_error("Invalid data: unexpected header\n");
return ERROR_STATE;
default:
if (bd->type < 0x80) {
print_error("Invalid data: unknown block type %d\n", bd->type);
return ERROR_STATE;
}
}
return PROCESSING_STATE;
case ERROR_STATE:
;
}
/* never reach here. This is added to suppress a warning */
return ERROR_STATE;
}
CChunkFileReader::Error CChunkFileReader::LoadFile(const std::string& _rFilename, int _Revision, const char *_VersionString, u8 *&_buffer, size_t &sz, std::string *_failureReason) {
if (!File::Exists(_rFilename)) {
*_failureReason = "LoadStateDoesntExist";
ERROR_LOG(COMMON, "ChunkReader: File doesn't exist");
return ERROR_BAD_FILE;
}
// Check file size
const u64 fileSize = File::GetSize(_rFilename);
static const u64 headerSize = sizeof(SChunkHeader);
if (fileSize < headerSize)
{
ERROR_LOG(COMMON, "ChunkReader: File too small");
return ERROR_BAD_FILE;
}
File::IOFile pFile(_rFilename, "rb");
if (!pFile)
{
ERROR_LOG(COMMON, "ChunkReader: Can't open file for reading");
return ERROR_BAD_FILE;
}
// read the header
SChunkHeader header;
if (!pFile.ReadArray(&header, 1))
{
ERROR_LOG(COMMON, "ChunkReader: Bad header size");
return ERROR_BAD_FILE;
}
// Check revision
if (header.Revision != _Revision)
{
ERROR_LOG(COMMON, "ChunkReader: Wrong file revision, got %d expected %d", header.Revision, _Revision);
return ERROR_BAD_FILE;
}
// get size
sz = (int)(fileSize - headerSize);
if (header.ExpectedSize != sz)
{
ERROR_LOG(COMMON, "ChunkReader: Bad file size, got %u expected %u", (u32)sz, header.ExpectedSize);
return ERROR_BAD_FILE;
}
// read the state
u8 *buffer = new u8[sz];
if (!pFile.ReadBytes(buffer, sz))
{
ERROR_LOG(COMMON, "ChunkReader: Error reading file");
delete [] buffer;
return ERROR_BAD_FILE;
}
_buffer = buffer;
if (header.Compress) {
u8 *uncomp_buffer = new u8[header.UncompressedSize];
size_t uncomp_size = header.UncompressedSize;
snappy_uncompress((const char *)buffer, sz, (char *)uncomp_buffer, &uncomp_size);
if ((u32)uncomp_size != header.UncompressedSize) {
ERROR_LOG(COMMON, "Size mismatch: file: %u calc: %u", header.UncompressedSize, (u32)uncomp_size);
return ERROR_BAD_FILE;
}
_buffer = uncomp_buffer;
sz = uncomp_size;
delete [] buffer;
}
return ERROR_NONE;
}
/* This routine gets executed after a call to HG_Trigger and
* the RPC has completed */
static hg_return_t
snappy_compress_rpc_cb(const struct hg_cb_info *callback_info)
{
struct snappy_compress_rpc_args *snappy_compress_rpc_args =
(struct snappy_compress_rpc_args *) callback_info->arg;
hg_handle_t handle = callback_info->info.forward.handle;
int *input;
size_t source_length;
void *compressed;
size_t compressed_length;
int *uncompressed;
size_t uncompressed_length;
snappy_compress_out_t snappy_compress_output;
snappy_status ret;
/* Get output */
printf("Received output from target\n");
HG_Get_output(handle, &snappy_compress_output);
/* Get Snappy output parameters */
ret = snappy_compress_output.ret;
compressed_length = snappy_compress_output.compressed_length;
compressed = snappy_compress_rpc_args->compressed;
input = snappy_compress_rpc_args->input;
source_length = snappy_compress_rpc_args->input_length;
/* Check ret */
if (ret != SNAPPY_OK) {
fprintf(stderr, "Error: snappy_compressed failed with ret %d\n", ret);
}
/* The output data is now in the bulk buffer */
printf("Compressed buffer length is: %zu\n", compressed_length);
print_buf(5, (int *)compressed);
if (snappy_validate_compressed_buffer(compressed, compressed_length) == SNAPPY_OK) {
printf("Compressed buffer validated: compressed successfully\n");
}
uncompressed_length = source_length * sizeof(int);
uncompressed = (int *) malloc(uncompressed_length);
/* Uncompress data and check uncompressed_length */
printf("Uncompressing buffer...\n");
snappy_uncompress(compressed, compressed_length,
(char *) uncompressed, &uncompressed_length);
printf("Uncompressed buffer length is: %zu\n", uncompressed_length);
print_buf(20, uncompressed);
/* Free output and handles */
HG_Free_output(handle, &snappy_compress_output);
HG_Bulk_free(snappy_compress_rpc_args->input_bulk_handle);
HG_Bulk_free(snappy_compress_rpc_args->compressed_bulk_handle);
/* Free data */
free(uncompressed);
free(compressed);
free(input);
free(snappy_compress_rpc_args);
/* We're done */
snappy_compress_done_g = HG_TRUE;
return HG_SUCCESS;
}
size_t cfs_decompress(void* dst, size_t dst_size, void const* src, size_t src_size)
{
return snappy_uncompress(src, src_size, dst, &dst_size) == SNAPPY_OK ? dst_size : 0;
}
int memDecompressSnappy( char *out, int outlen, char *in, int inlen ) {
size_t osz = outlen;
snappy_status ret = snappy_uncompress( in, inlen, out, &osz );
if(ret == SNAPPY_OK ) return osz; else assertmsg(false,"snappy_uncompress failed");
return 0;
}
