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- Added DEFLATE compression support as per RFC3749 (requires zlib)

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This commit is contained in:
Paul Bakker 2012-07-03 13:30:23 +00:00
parent 4f9a7bb7fd
commit 2770fbd651
10 changed files with 285 additions and 14 deletions
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28
include/polarssl/ssl.h
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@ -43,6 +43,10 @@
#include "pkcs11.h"
#endif
#if defined(POLARSSL_ZLIB_SUPPORT)
#include "zlib.h"
#endif
#if defined(_MSC_VER) && !defined(inline)
#define inline _inline
#else
@ -86,6 +90,7 @@
#define POLARSSL_ERR_SSL_MALLOC_FAILED -0x7F00 /**< Memory allocation failed */
#define POLARSSL_ERR_SSL_HW_ACCEL_FAILED -0x7F80 /**< Hardware acceleration function returned with error */
#define POLARSSL_ERR_SSL_HW_ACCEL_FALLTHROUGH -0x6F80 /**< Hardware acceleration function skipped / left alone data */
#define POLARSSL_ERR_SSL_COMPRESSION_FAILED -0x6F00 /**< Processing of the compression / decompression failed */
/*
* Various constants
@ -99,6 +104,7 @@
#define SSL_IS_CLIENT 0
#define SSL_IS_SERVER 1
#define SSL_COMPRESS_NULL 0
#define SSL_COMPRESS_DEFLATE 1
#define SSL_VERIFY_NONE 0
#define SSL_VERIFY_OPTIONAL 1
@ -108,9 +114,17 @@
/*
* Allow an extra 512 bytes for the record header
* and encryption overhead (counter + MAC + padding).
* and encryption overhead (counter + MAC + padding)
* and allow for a maximum of 1024 of compression expansion if
* enabled.
*/
#define SSL_BUFFER_LEN (SSL_MAX_CONTENT_LEN + 512)
#if defined(POLARSSL_ZLIB_SUPPORT)
#define SSL_COMPRESSION_ADD 1024
#else
#define SSL_COMPRESSION_ADD 0
#endif
#define SSL_BUFFER_LEN (SSL_MAX_CONTENT_LEN + SSL_COMPRESSION_ADD + 512)
/*
* Supported ciphersuites
@ -253,6 +267,7 @@ struct _ssl_session
{
time_t start; /*!< starting time */
int ciphersuite; /*!< chosen ciphersuite */
int compression; /*!< chosen compression */
size_t length; /*!< session id length */
unsigned char id[32]; /*!< session identifier */
unsigned char master[48]; /*!< the master secret */
@ -374,6 +389,11 @@ struct _ssl_context
unsigned long ctx_enc[134]; /*!< encryption context */
unsigned long ctx_dec[134]; /*!< decryption context */
#if defined(POLARSSL_ZLIB_SUPPORT)
z_stream ctx_deflate; /*!< compression context */
z_stream ctx_inflate; /*!< decompression context */
#endif
/*
* TLS extensions
*/
@ -445,8 +465,10 @@ int ssl_init( ssl_context *ssl );
* pointers and data.
*
* \param ssl SSL context
* \return 0 if successful, or POLARSSL_ERR_SSL_HW_ACCEL_FAILED or
* POLARSSL_ERR_SSL_COMPRESSION_FAILED
*/
void ssl_session_reset( ssl_context *ssl );
int ssl_session_reset( ssl_context *ssl );
/**
* \brief Set the current endpoint type