upd: openssl to 1.1.0

[cassiopeia.git] / lib / openssl / ssl / statem / statem.h

diff --git a/lib/openssl/ssl/statem/statem.h b/lib/openssl/ssl/statem/statem.h
new file mode 100644 (file)
index 0000000..2fca39b
--- /dev/null
+++ b/lib/openssl/ssl/statem/statem.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*****************************************************************************
+ *                                                                           *
+ * These enums should be considered PRIVATE to the state machine. No         *
+ * non-state machine code should need to use these                           *
+ *                                                                           *
+ *****************************************************************************/
+/*
+ * Valid return codes used for functions performing work prior to or after
+ * sending or receiving a message
+ */
+typedef enum {
+    /* Something went wrong */
+    WORK_ERROR,
+    /* We're done working and there shouldn't be anything else to do after */
+    WORK_FINISHED_STOP,
+    /* We're done working move onto the next thing */
+    WORK_FINISHED_CONTINUE,
+    /* We're working on phase A */
+    WORK_MORE_A,
+    /* We're working on phase B */
+    WORK_MORE_B
+} WORK_STATE;
+
+/* Write transition return codes */
+typedef enum {
+    /* Something went wrong */
+    WRITE_TRAN_ERROR,
+    /* A transition was successfully completed and we should continue */
+    WRITE_TRAN_CONTINUE,
+    /* There is no more write work to be done */
+    WRITE_TRAN_FINISHED
+} WRITE_TRAN;
+
+/* Message flow states */
+typedef enum {
+    /* No handshake in progress */
+    MSG_FLOW_UNINITED,
+    /* A permanent error with this connection */
+    MSG_FLOW_ERROR,
+    /* We are about to renegotiate */
+    MSG_FLOW_RENEGOTIATE,
+    /* We are reading messages */
+    MSG_FLOW_READING,
+    /* We are writing messages */
+    MSG_FLOW_WRITING,
+    /* Handshake has finished */
+    MSG_FLOW_FINISHED
+} MSG_FLOW_STATE;
+
+/* Read states */
+typedef enum {
+    READ_STATE_HEADER,
+    READ_STATE_BODY,
+    READ_STATE_POST_PROCESS
+} READ_STATE;
+
+/* Write states */
+typedef enum {
+    WRITE_STATE_TRANSITION,
+    WRITE_STATE_PRE_WORK,
+    WRITE_STATE_SEND,
+    WRITE_STATE_POST_WORK
+} WRITE_STATE;
+
+/*****************************************************************************
+ *                                                                           *
+ * This structure should be considered "opaque" to anything outside of the   *
+ * state machine. No non-state machine code should be accessing the members  *
+ * of this structure.                                                        *
+ *                                                                           *
+ *****************************************************************************/
+
+struct ossl_statem_st {
+    MSG_FLOW_STATE state;
+    WRITE_STATE write_state;
+    WORK_STATE write_state_work;
+    READ_STATE read_state;
+    WORK_STATE read_state_work;
+    OSSL_HANDSHAKE_STATE hand_state;
+    int in_init;
+    int read_state_first_init;
+    /* true when we are actually in SSL_accept() or SSL_connect() */
+    int in_handshake;
+    /* Should we skip the CertificateVerify message? */
+    unsigned int no_cert_verify;
+    int use_timer;
+#ifndef OPENSSL_NO_SCTP
+    int in_sctp_read_sock;
+#endif
+};
+typedef struct ossl_statem_st OSSL_STATEM;
+
+/*****************************************************************************
+ *                                                                           *
+ * The following macros/functions represent the libssl internal API to the   *
+ * state machine. Any libssl code may call these functions/macros            *
+ *                                                                           *
+ *****************************************************************************/
+
+__owur int ossl_statem_accept(SSL *s);
+__owur int ossl_statem_connect(SSL *s);
+void ossl_statem_clear(SSL *s);
+void ossl_statem_set_renegotiate(SSL *s);
+void ossl_statem_set_error(SSL *s);
+int ossl_statem_in_error(const SSL *s);
+void ossl_statem_set_in_init(SSL *s, int init);
+int ossl_statem_get_in_handshake(SSL *s);
+void ossl_statem_set_in_handshake(SSL *s, int inhand);
+void ossl_statem_set_hello_verify_done(SSL *s);
+__owur int ossl_statem_app_data_allowed(SSL *s);
+#ifndef OPENSSL_NO_SCTP
+void ossl_statem_set_sctp_read_sock(SSL *s, int read_sock);
+__owur int ossl_statem_in_sctp_read_sock(SSL *s);
+#endif