mirror of
https://github.com/openssl/openssl.git
synced 2024-12-18 14:33:42 +08:00
660 lines
20 KiB
C
660 lines
20 KiB
C
/*
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* Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* This is the OSSLTEST engine. It provides deliberately crippled digest
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* implementations for test purposes. It is highly insecure and must NOT be
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* used for any purpose except testing
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*/
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#include <stdio.h>
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#include <string.h>
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#include <openssl/engine.h>
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#include <openssl/sha.h>
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#include <openssl/md5.h>
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <openssl/modes.h>
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#include <openssl/aes.h>
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#include <openssl/crypto.h>
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#define OSSLTEST_LIB_NAME "OSSLTEST"
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#include "e_ossltest_err.c"
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/* Engine Id and Name */
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static const char *engine_ossltest_id = "ossltest";
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static const char *engine_ossltest_name = "OpenSSL Test engine support";
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/* Engine Lifetime functions */
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static int ossltest_destroy(ENGINE *e);
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static int ossltest_init(ENGINE *e);
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static int ossltest_finish(ENGINE *e);
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void ENGINE_load_ossltest(void);
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/* Set up digests */
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static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
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const int **nids, int nid);
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/* MD5 */
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static int digest_md5_init(EVP_MD_CTX *ctx);
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static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_md5_md = NULL;
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static const EVP_MD *digest_md5(void)
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{
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if (_hidden_md5_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_md5, NID_md5WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(MD5_CTX))
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|| !EVP_MD_meth_set_flags(md, 0)
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|| !EVP_MD_meth_set_init(md, digest_md5_init)
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|| !EVP_MD_meth_set_update(md, digest_md5_update)
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|| !EVP_MD_meth_set_final(md, digest_md5_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_md5_md = md;
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}
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return _hidden_md5_md;
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}
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/* SHA1 */
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static int digest_sha1_init(EVP_MD_CTX *ctx);
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static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha1_md = NULL;
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static const EVP_MD *digest_sha1(void)
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{
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if (_hidden_sha1_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha1_init)
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|| !EVP_MD_meth_set_update(md, digest_sha1_update)
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|| !EVP_MD_meth_set_final(md, digest_sha1_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha1_md = md;
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}
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return _hidden_sha1_md;
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}
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/* SHA256 */
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static int digest_sha256_init(EVP_MD_CTX *ctx);
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static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha256_md = NULL;
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static const EVP_MD *digest_sha256(void)
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{
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if (_hidden_sha256_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha256, NID_sha256WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA256_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA256_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA256_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha256_init)
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|| !EVP_MD_meth_set_update(md, digest_sha256_update)
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|| !EVP_MD_meth_set_final(md, digest_sha256_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha256_md = md;
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}
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return _hidden_sha256_md;
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}
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/* SHA384/SHA512 */
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static int digest_sha384_init(EVP_MD_CTX *ctx);
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static int digest_sha512_init(EVP_MD_CTX *ctx);
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static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md);
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static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha384_md = NULL;
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static const EVP_MD *digest_sha384(void)
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{
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if (_hidden_sha384_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha384, NID_sha384WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA384_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA512_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha384_init)
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|| !EVP_MD_meth_set_update(md, digest_sha512_update)
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|| !EVP_MD_meth_set_final(md, digest_sha384_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha384_md = md;
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}
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return _hidden_sha384_md;
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}
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static EVP_MD *_hidden_sha512_md = NULL;
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static const EVP_MD *digest_sha512(void)
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{
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if (_hidden_sha512_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha512, NID_sha512WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA512_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA512_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha512_init)
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|| !EVP_MD_meth_set_update(md, digest_sha512_update)
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|| !EVP_MD_meth_set_final(md, digest_sha512_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha512_md = md;
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}
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return _hidden_sha512_md;
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}
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static void destroy_digests(void)
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{
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EVP_MD_meth_free(_hidden_md5_md);
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_hidden_md5_md = NULL;
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EVP_MD_meth_free(_hidden_sha1_md);
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_hidden_sha1_md = NULL;
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EVP_MD_meth_free(_hidden_sha256_md);
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_hidden_sha256_md = NULL;
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EVP_MD_meth_free(_hidden_sha384_md);
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_hidden_sha384_md = NULL;
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EVP_MD_meth_free(_hidden_sha512_md);
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_hidden_sha512_md = NULL;
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}
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static int ossltest_digest_nids(const int **nids)
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{
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static int digest_nids[6] = { 0, 0, 0, 0, 0, 0 };
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static int pos = 0;
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static int init = 0;
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if (!init) {
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const EVP_MD *md;
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if ((md = digest_md5()) != NULL)
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digest_nids[pos++] = EVP_MD_type(md);
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if ((md = digest_sha1()) != NULL)
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digest_nids[pos++] = EVP_MD_type(md);
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if ((md = digest_sha256()) != NULL)
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digest_nids[pos++] = EVP_MD_type(md);
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if ((md = digest_sha384()) != NULL)
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digest_nids[pos++] = EVP_MD_type(md);
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if ((md = digest_sha512()) != NULL)
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digest_nids[pos++] = EVP_MD_type(md);
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digest_nids[pos] = 0;
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init = 1;
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}
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*nids = digest_nids;
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return pos;
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}
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/* Setup ciphers */
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static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **,
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const int **, int);
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static int ossltest_cipher_nids[] = {
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NID_aes_128_cbc, NID_aes_128_gcm, 0
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};
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/* AES128 */
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int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
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void *ptr);
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static EVP_CIPHER *_hidden_aes_128_cbc = NULL;
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static const EVP_CIPHER *ossltest_aes_128_cbc(void)
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{
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if (_hidden_aes_128_cbc == NULL
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&& ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc,
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16 /* block size */,
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16 /* key len */)) == NULL
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|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16)
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|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc,
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EVP_CIPH_FLAG_DEFAULT_ASN1
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| EVP_CIPH_CBC_MODE)
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|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc,
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ossltest_aes128_init_key)
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|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc,
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ossltest_aes128_cbc_cipher)
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|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc,
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EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) {
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EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
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_hidden_aes_128_cbc = NULL;
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}
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return _hidden_aes_128_cbc;
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}
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static EVP_CIPHER *_hidden_aes_128_gcm = NULL;
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#define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
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| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
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| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
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| EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \
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| EVP_CIPH_GCM_MODE)
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static const EVP_CIPHER *ossltest_aes_128_gcm(void)
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{
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if (_hidden_aes_128_gcm == NULL
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&& ((_hidden_aes_128_gcm = EVP_CIPHER_meth_new(NID_aes_128_gcm,
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1 /* block size */,
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16 /* key len */)) == NULL
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|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_gcm,12)
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|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_gcm, AES_GCM_FLAGS)
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|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_gcm,
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ossltest_aes128_gcm_init_key)
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|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_gcm,
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ossltest_aes128_gcm_cipher)
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|| !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm,
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ossltest_aes128_gcm_ctrl)
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|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm,
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EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) {
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EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
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_hidden_aes_128_gcm = NULL;
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}
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return _hidden_aes_128_gcm;
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}
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static void destroy_ciphers(void)
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{
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EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
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EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
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_hidden_aes_128_cbc = NULL;
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}
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static int bind_ossltest(ENGINE *e)
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{
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/* Ensure the ossltest error handling is set up */
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ERR_load_OSSLTEST_strings();
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if (!ENGINE_set_id(e, engine_ossltest_id)
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|| !ENGINE_set_name(e, engine_ossltest_name)
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|| !ENGINE_set_digests(e, ossltest_digests)
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|| !ENGINE_set_ciphers(e, ossltest_ciphers)
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|| !ENGINE_set_destroy_function(e, ossltest_destroy)
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|| !ENGINE_set_init_function(e, ossltest_init)
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|| !ENGINE_set_finish_function(e, ossltest_finish)) {
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OSSLTESTerr(OSSLTEST_F_BIND_OSSLTEST, OSSLTEST_R_INIT_FAILED);
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return 0;
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}
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return 1;
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}
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#ifndef OPENSSL_NO_DYNAMIC_ENGINE
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static int bind_helper(ENGINE *e, const char *id)
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{
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if (id && (strcmp(id, engine_ossltest_id) != 0))
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return 0;
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if (!bind_ossltest(e))
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return 0;
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return 1;
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}
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IMPLEMENT_DYNAMIC_CHECK_FN()
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IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
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#endif
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static ENGINE *engine_ossltest(void)
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{
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ENGINE *ret = ENGINE_new();
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if (ret == NULL)
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return NULL;
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if (!bind_ossltest(ret)) {
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ENGINE_free(ret);
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return NULL;
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}
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return ret;
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}
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void ENGINE_load_ossltest(void)
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{
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/* Copied from eng_[openssl|dyn].c */
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ENGINE *toadd = engine_ossltest();
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if (!toadd)
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return;
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ENGINE_add(toadd);
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ENGINE_free(toadd);
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ERR_clear_error();
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}
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static int ossltest_init(ENGINE *e)
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{
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return 1;
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}
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static int ossltest_finish(ENGINE *e)
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{
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return 1;
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}
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static int ossltest_destroy(ENGINE *e)
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{
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destroy_digests();
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destroy_ciphers();
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ERR_unload_OSSLTEST_strings();
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return 1;
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}
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static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
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const int **nids, int nid)
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{
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int ok = 1;
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if (!digest) {
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/* We are returning a list of supported nids */
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return ossltest_digest_nids(nids);
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}
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/* We are being asked for a specific digest */
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switch (nid) {
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case NID_md5:
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*digest = digest_md5();
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break;
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case NID_sha1:
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*digest = digest_sha1();
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break;
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case NID_sha256:
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*digest = digest_sha256();
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break;
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case NID_sha384:
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*digest = digest_sha384();
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break;
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case NID_sha512:
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*digest = digest_sha512();
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break;
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default:
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ok = 0;
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*digest = NULL;
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break;
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}
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return ok;
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}
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static int ossltest_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
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const int **nids, int nid)
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{
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int ok = 1;
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if (!cipher) {
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/* We are returning a list of supported nids */
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*nids = ossltest_cipher_nids;
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return (sizeof(ossltest_cipher_nids) - 1)
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/ sizeof(ossltest_cipher_nids[0]);
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}
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/* We are being asked for a specific cipher */
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switch (nid) {
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case NID_aes_128_cbc:
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*cipher = ossltest_aes_128_cbc();
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break;
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case NID_aes_128_gcm:
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*cipher = ossltest_aes_128_gcm();
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break;
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default:
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ok = 0;
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*cipher = NULL;
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break;
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}
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return ok;
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}
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static void fill_known_data(unsigned char *md, unsigned int len)
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{
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unsigned int i;
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for (i=0; i<len; i++) {
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md[i] = (unsigned char)(i & 0xff);
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}
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}
|
|
|
|
/*
|
|
* MD5 implementation. We go through the motions of doing MD5 by deferring to
|
|
* the standard implementation. Then we overwrite the result with a will defined
|
|
* value, so that all "MD5" digests using the test engine always end up with
|
|
* the same value.
|
|
*/
|
|
#undef data
|
|
#define data(ctx) ((MD5_CTX *)EVP_MD_CTX_md_data(ctx))
|
|
static int digest_md5_init(EVP_MD_CTX *ctx)
|
|
{
|
|
return MD5_Init(data(ctx));
|
|
}
|
|
|
|
static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
|
|
size_t count)
|
|
{
|
|
return MD5_Update(data(ctx), data, (size_t)count);
|
|
}
|
|
|
|
static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
int ret;
|
|
ret = MD5_Final(md, data(ctx));
|
|
|
|
if (ret > 0) {
|
|
fill_known_data(md, MD5_DIGEST_LENGTH);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SHA1 implementation.
|
|
*/
|
|
#undef data
|
|
#define data(ctx) ((SHA_CTX *)EVP_MD_CTX_md_data(ctx))
|
|
static int digest_sha1_init(EVP_MD_CTX *ctx)
|
|
{
|
|
return SHA1_Init(data(ctx));
|
|
}
|
|
|
|
static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
|
|
size_t count)
|
|
{
|
|
return SHA1_Update(data(ctx), data, (size_t)count);
|
|
}
|
|
|
|
static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
int ret;
|
|
ret = SHA1_Final(md, data(ctx));
|
|
|
|
if (ret > 0) {
|
|
fill_known_data(md, SHA_DIGEST_LENGTH);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SHA256 implementation.
|
|
*/
|
|
#undef data
|
|
#define data(ctx) ((SHA256_CTX *)EVP_MD_CTX_md_data(ctx))
|
|
static int digest_sha256_init(EVP_MD_CTX *ctx)
|
|
{
|
|
return SHA256_Init(data(ctx));
|
|
}
|
|
|
|
static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
|
|
size_t count)
|
|
{
|
|
return SHA256_Update(data(ctx), data, (size_t)count);
|
|
}
|
|
|
|
static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
int ret;
|
|
ret = SHA256_Final(md, data(ctx));
|
|
|
|
if (ret > 0) {
|
|
fill_known_data(md, SHA256_DIGEST_LENGTH);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SHA384/512 implementation.
|
|
*/
|
|
#undef data
|
|
#define data(ctx) ((SHA512_CTX *)EVP_MD_CTX_md_data(ctx))
|
|
static int digest_sha384_init(EVP_MD_CTX *ctx)
|
|
{
|
|
return SHA384_Init(data(ctx));
|
|
}
|
|
|
|
static int digest_sha512_init(EVP_MD_CTX *ctx)
|
|
{
|
|
return SHA512_Init(data(ctx));
|
|
}
|
|
|
|
static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
|
|
size_t count)
|
|
{
|
|
return SHA512_Update(data(ctx), data, (size_t)count);
|
|
}
|
|
|
|
static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
int ret;
|
|
/* Actually uses SHA512_Final! */
|
|
ret = SHA512_Final(md, data(ctx));
|
|
|
|
if (ret > 0) {
|
|
fill_known_data(md, SHA384_DIGEST_LENGTH);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
{
|
|
int ret;
|
|
ret = SHA512_Final(md, data(ctx));
|
|
|
|
if (ret > 0) {
|
|
fill_known_data(md, SHA512_DIGEST_LENGTH);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* AES128 Implementation
|
|
*/
|
|
|
|
int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
return EVP_CIPHER_meth_get_init(EVP_aes_128_cbc()) (ctx, key, iv, enc);
|
|
}
|
|
|
|
int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
unsigned char *tmpbuf;
|
|
int ret;
|
|
|
|
tmpbuf = OPENSSL_malloc(inl);
|
|
if (tmpbuf == NULL)
|
|
return -1;
|
|
|
|
/* Remember what we were asked to encrypt */
|
|
memcpy(tmpbuf, in, inl);
|
|
|
|
/* Go through the motions of encrypting it */
|
|
ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc())(ctx, out, in, inl);
|
|
|
|
/* Throw it all away and just use the plaintext as the output */
|
|
memcpy(out, tmpbuf, inl);
|
|
OPENSSL_free(tmpbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
return EVP_CIPHER_meth_get_init(EVP_aes_128_gcm()) (ctx, key, iv, enc);
|
|
}
|
|
|
|
|
|
int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
unsigned char *tmpbuf = OPENSSL_malloc(inl);
|
|
|
|
/* OPENSSL_malloc will return NULL if inl == 0 */
|
|
if (tmpbuf == NULL && inl > 0)
|
|
return -1;
|
|
|
|
/* Remember what we were asked to encrypt */
|
|
memcpy(tmpbuf, in, inl);
|
|
|
|
/* Go through the motions of encrypting it */
|
|
EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl);
|
|
|
|
/* Throw it all away and just use the plaintext as the output */
|
|
memcpy(out, tmpbuf, inl);
|
|
OPENSSL_free(tmpbuf);
|
|
|
|
return inl;
|
|
}
|
|
|
|
static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
|
|
void *ptr)
|
|
{
|
|
/* Pass the ctrl down */
|
|
int ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr);
|
|
|
|
if (ret <= 0)
|
|
return ret;
|
|
|
|
switch(type) {
|
|
case EVP_CTRL_AEAD_GET_TAG:
|
|
/* Always give the same tag */
|
|
memset(ptr, 0, EVP_GCM_TLS_TAG_LEN);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|