#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
-#define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
-#define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
-#if 0 /* Because it clashes with KRB5, is never used any more, and is safe
- to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
- of the ietf-tls list */
-#define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
+#if 0
+ #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
+ #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
+ #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
+ to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
+ of the ietf-tls list */
+ #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
+ #endif
#endif
/* VRS Additional Kerberos5 entries
#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
-#define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
-#define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
-#define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
+#if 0
+ #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
+ #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
+ #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
+#endif
#define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
#define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
#define SSL3_SESSION_ID_SIZE 32
#define SSL3_RT_HEADER_LENGTH 5
-/* Due to MS stuffing up, this can change.... */
-#if defined(OPENSSL_SYS_WIN16) || \
- (defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32))
-#define SSL3_RT_MAX_EXTRA (14000)
+#ifndef SSL3_ALIGN_PAYLOAD
+ /* Some will argue that this increases memory footprint, but it's
+ * not actually true. Point is that malloc has to return at least
+ * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
+ * 3 bytes in either case. Suggested pre-gaping simply moves these
+ * wasted bytes from the end of allocated region to its front,
+ * but makes data payload aligned, which improves performance:-) */
+# define SSL3_ALIGN_PAYLOAD 8
#else
-#define SSL3_RT_MAX_EXTRA (16384)
+# if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
+# error "insane SSL3_ALIGN_PAYLOAD"
+# undef SSL3_ALIGN_PAYLOAD
+# endif
#endif
+/* This is the maximum MAC (digest) size used by the SSL library.
+ * Currently maximum of 20 is used by SHA1, but we reserve for
+ * future extension for 512-bit hashes.
+ */
+
+#define SSL3_RT_MAX_MD_SIZE 64
+
+/* Maximum block size used in all ciphersuites. Currently 16 for AES.
+ */
+
+#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
+
+#define SSL3_RT_MAX_EXTRA (16384)
+
+/* Maximum plaintext length: defined by SSL/TLS standards */
#define SSL3_RT_MAX_PLAIN_LENGTH 16384
-#define SSL3_RT_MAX_COMPRESSED_LENGTH (1024+SSL3_RT_MAX_PLAIN_LENGTH)
-#define SSL3_RT_MAX_ENCRYPTED_LENGTH (1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
-#define SSL3_RT_MAX_PACKET_SIZE (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
-#define SSL3_RT_MAX_DATA_SIZE (1024*1024)
+/* Maximum compression overhead: defined by SSL/TLS standards */
+#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
+
+/* The standards give a maximum encryption overhead of 1024 bytes.
+ * In practice the value is lower than this. The overhead is the maximum
+ * number of padding bytes (256) plus the mac size.
+ */
+#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
+
+/* OpenSSL currently only uses a padding length of at most one block so
+ * the send overhead is smaller.
+ */
+
+#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
+ (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
+
+/* If compression isn't used don't include the compression overhead */
+
+#ifdef OPENSSL_NO_COMP
+#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
+#else
+#define SSL3_RT_MAX_COMPRESSED_LENGTH \
+ (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
+#endif
+#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
+ (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
+#define SSL3_RT_MAX_PACKET_SIZE \
+ (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
/*rw*/ unsigned char *input; /* where the decode bytes are */
/*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
/*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
-/*r */ unsigned long long seq_num; /* sequence number, needed by DTLS1 */
+/*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
} SSL3_RECORD;
typedef struct ssl3_buffer_st
int need_empty_fragments;
int empty_fragment_done;
+ /* The value of 'extra' when the buffers were initialized */
+ int init_extra;
+
SSL3_BUFFER rbuf; /* read IO goes into here */
SSL3_BUFFER wbuf; /* write IO goes into here */
} SSL3_STATE;
-/* client methods */
-int ssl3_client_hello(SSL *s);
-int ssl3_get_server_hello(SSL *s);
-int ssl3_get_certificate_request(SSL *s);
-int ssl3_get_server_done(SSL *s);
-int ssl3_send_client_verify(SSL *s);
-int ssl3_send_client_certificate(SSL *s);
-int ssl3_send_client_key_exchange(SSL *s);
-int ssl3_get_key_exchange(SSL *s);
-int ssl3_get_server_certificate(SSL *s);
-int ssl3_check_cert_and_algorithm(SSL *s);
-
-/* server methods */
-int ssl3_get_client_hello(SSL *s);
-int ssl3_send_server_hello(SSL *s);
-int ssl3_send_hello_request(SSL *s);
-int ssl3_send_server_key_exchange(SSL *s);
-int ssl3_send_certificate_request(SSL *s);
-int ssl3_send_server_done(SSL *s);
-int ssl3_check_client_hello(SSL *s);
-int ssl3_get_client_certificate(SSL *s);
-int ssl3_get_client_key_exchange(SSL *s);
-int ssl3_get_cert_verify(SSL *s);
-
-/* utility functions */
-void ssl3_record_sequence_update(unsigned char *seq);
-int ssl3_do_change_cipher_spec(SSL *ssl);
-
/* SSLv3 */
/*client */
/* extra state */