PolarSSL Data Structures

struct _ssl_session {
    int cipher;                 /*!< chosen cipher      */
    int length;                 /*!< session id length  */
    unsigned char id[32];       /*!< session identifier */
    // ...
};
typedef struct _ssl_session ssl_session;

struct _ssl_context {
  /*
   * Miscellaneous
   */
  int state;                  /*!< SSL handshake: current state     */

  int major_ver;              /*!< equal to  SSL_MAJOR_VERSION_3    */
  int minor_ver;              /*!< either 0 (SSL3) or 1 (TLS1.0)    */

  int max_major_ver;          /*!< max. major version from client   */
  int max_minor_ver;          /*!< max. minor version from client   */

  /*
   * Callbacks (RNG, debug, I/O)
   */
  // int ( *f_recv)(void *, unsigned char *, int);

  // void *p_recv;               /*!< context for reading operations   */

  /*
   * Session layer
   */
   ssl_session *session;               /*!<  current session data    */

  /*
   * Record layer (incoming data)
   */
  unsigned char *in_hdr;      /*!< 5-byte record header (in_ctr+8)  */
  unsigned char *in_msg;      /*!< the message contents (in_hdr+5)  */

  int in_left;                /*!< amount of data read so far       */

  /*
   * Crypto layer
   */
  int *ciphers;                       /*!<  allowed ciphersuites    */

  unsigned char randbytes[64];        /*!<  random bytes            */

  // ...
}
typedef _ssl_context ssl_context;

The ClientHello Parsing Program