add circuitpython code

1 files changed, 329 insertions, 0 deletions

diff --git a/circuitpython/lib/axtls/ssl/tls1.h b/circuitpython/lib/axtls/ssl/tls1.h
new file mode 100755
index 0000000..e8ed8a7
--- /dev/null
+++ b/circuitpython/lib/axtls/ssl/tls1.h
@@ -0,0 +1,329 @@
+/*
+ * Copyright (c) 2007-2016, Cameron Rich
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * * Neither the name of the axTLS project nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file tls1.h
+ *
+ * @brief The definitions for the TLS library.
+ */
+#ifndef HEADER_SSL_LIB_H
+#define HEADER_SSL_LIB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "version.h"
+#include "config.h"
+#include "os_int.h"
+#include "os_port.h"
+#include "crypto.h"
+#include "crypto_misc.h"
+
+#define SSL_PROTOCOL_MIN_VERSION    0x31   /* TLS v1.0 */
+#define SSL_PROTOCOL_VERSION_MAX    0x33   /* TLS v1.3 */
+#define SSL_PROTOCOL_VERSION_TLS1_1 0x32   /* TLS v1.1 */
+#define SSL_PROTOCOL_VERSION_TLS1_2 0x33   /* TLS v1.2 */
+#define SSL_RANDOM_SIZE             32
+#define SSL_SECRET_SIZE             48
+#define SSL_FINISHED_HASH_SIZE      12
+#define SSL_RECORD_SIZE             5
+#define SSL_SERVER_READ             0
+#define SSL_SERVER_WRITE            1
+#define SSL_CLIENT_READ             2
+#define SSL_CLIENT_WRITE            3
+#define SSL_HS_HDR_SIZE             4
+
+/* the flags we use while establishing a connection */
+#define SSL_NEED_RECORD             0x0001
+#define SSL_TX_ENCRYPTED            0x0002 
+#define SSL_RX_ENCRYPTED            0x0004
+#define SSL_SESSION_RESUME          0x0008
+#define SSL_IS_CLIENT               0x0010
+#define SSL_HAS_CERT_REQ            0x0020
+#define SSL_SENT_CLOSE_NOTIFY       0x0040
+
+/* some macros to muck around with flag bits */
+#define SET_SSL_FLAG(A)             (ssl->flag |= A)
+#define CLR_SSL_FLAG(A)             (ssl->flag &= ~A)
+#define IS_SET_SSL_FLAG(A)          (ssl->flag & A)
+
+#define MAX_KEY_BYTE_SIZE           512     /* for a 4096 bit key */
+/* On send, will send another SSL fragment if plaintext exceeds RT_MAX_PLAIN_LENGTH */
+#ifndef RT_MAX_PLAIN_LENGTH
+#define RT_MAX_PLAIN_LENGTH         16384
+#endif
+/* Total receive buffer is RT_MAX_PLAIN_LENGTH + RT_EXTRA */
+#ifndef RT_EXTRA
+#define RT_EXTRA                    1024
+#endif
+#define BM_RECORD_OFFSET            5
+
+#define NUM_PROTOCOLS               4
+
+#define MAX_SIG_ALGORITHMS          4
+#define SIG_ALG_SHA1                2
+#define SIG_ALG_SHA256              4
+#define SIG_ALG_SHA384              5
+#define SIG_ALG_SHA512              6
+#define SIG_ALG_RSA                 1
+
+#define PARANOIA_CHECK(A, B)        if (A < B) { \
+    ret = SSL_ERROR_INVALID_HANDSHAKE; goto error; }
+
+/* protocol types */
+enum
+{
+    PT_CHANGE_CIPHER_SPEC = 20,
+    PT_ALERT_PROTOCOL,
+    PT_HANDSHAKE_PROTOCOL,
+    PT_APP_PROTOCOL_DATA
+};
+
+/* handshaking types */
+enum
+{
+    HS_HELLO_REQUEST,
+    HS_CLIENT_HELLO,
+    HS_SERVER_HELLO,
+    HS_CERTIFICATE = 11,
+    HS_SERVER_KEY_XCHG,
+    HS_CERT_REQ,
+    HS_SERVER_HELLO_DONE,
+    HS_CERT_VERIFY,
+    HS_CLIENT_KEY_XCHG,
+    HS_FINISHED = 20
+};
+
+/* SSL extension types */
+enum
+{
+    SSL_EXT_SERVER_NAME = 0,
+    SSL_EXT_MAX_FRAGMENT_SIZE,
+    SSL_EXT_SIG_ALG = 0x0d,
+};
+
+typedef struct 
+{
+    uint8_t cipher;
+    uint8_t key_size;
+    uint8_t iv_size;
+    uint8_t padding_size;
+    uint8_t digest_size;
+    uint8_t key_block_size;
+    hmac_func hmac;
+    crypt_func encrypt;
+    crypt_func decrypt;
+} cipher_info_t;
+
+struct _SSLObjLoader 
+{
+    uint8_t *buf;
+    int len;
+};
+
+typedef struct _SSLObjLoader SSLObjLoader;
+
+typedef struct 
+{
+    time_t conn_time;
+    uint8_t session_id[SSL_SESSION_ID_SIZE];
+    uint8_t master_secret[SSL_SECRET_SIZE];
+} SSL_SESSION;
+
+typedef struct
+{
+    uint8_t *buf;
+    int size;
+    uint8_t hash_alg;
+} SSL_CERT;
+
+typedef struct
+{
+    MD5_CTX md5_ctx;
+    SHA1_CTX sha1_ctx;
+    SHA256_CTX sha256_ctx;
+    uint8_t client_random[SSL_RANDOM_SIZE]; /* client's random sequence */
+    uint8_t server_random[SSL_RANDOM_SIZE]; /* server's random sequence */
+    uint8_t final_finish_mac[128];
+    uint8_t master_secret[SSL_SECRET_SIZE];
+    uint8_t key_block[256];
+    uint16_t bm_proc_index;
+    uint8_t key_block_generated;
+} DISPOSABLE_CTX;
+
+typedef struct 
+{
+    const char *host_name; /* Needed for the SNI support */
+    /* Needed for the Max Fragment Size Extension. 
+       Allowed values: 2^9, 2^10 .. 2^14 */
+    uint16_t max_fragment_size; 
+} SSL_EXTENSIONS;
+
+struct _SSL
+{
+    uint32_t flag;
+    uint16_t need_bytes;
+    uint16_t got_bytes;
+    uint8_t record_type;
+    uint8_t cipher;
+    uint8_t sess_id_size;
+    uint8_t version;
+    uint8_t client_version;
+    int16_t next_state;
+    int16_t hs_status;
+    DISPOSABLE_CTX *dc;         /* temporary data which we'll get rid of soon */
+    long client_fd;
+    const cipher_info_t *cipher_info;
+    void *encrypt_ctx;
+    void *decrypt_ctx;
+    uint8_t bm_all_data[RT_MAX_PLAIN_LENGTH+RT_EXTRA];
+    uint8_t *bm_data;
+    uint16_t bm_index;
+    uint16_t bm_read_index;
+    uint8_t sig_algs[MAX_SIG_ALGORITHMS];
+    uint8_t num_sig_algs;
+    struct _SSL *next;                  /* doubly linked list */
+    struct _SSL *prev;
+    struct _SSL_CTX *ssl_ctx;           /* back reference to a clnt/svr ctx */
+#ifndef CONFIG_SSL_SKELETON_MODE
+    uint16_t session_index;
+    SSL_SESSION *session;
+#endif
+#if defined(CONFIG_SSL_CERT_VERIFICATION) || defined(CONFIG_SSL_ENABLE_CLIENT)
+    X509_CTX *x509_ctx;
+#endif
+
+    uint8_t session_id[SSL_SESSION_ID_SIZE]; 
+    uint8_t client_mac[SHA256_SIZE];    /* for HMAC verification */
+    uint8_t server_mac[SHA256_SIZE];    /* for HMAC verification */
+    uint8_t read_sequence[8];           /* 64 bit sequence number */
+    uint8_t write_sequence[8];          /* 64 bit sequence number */
+    uint8_t hmac_header[SSL_RECORD_SIZE];    /* rx hmac */
+    SSL_EXTENSIONS *extensions; /* Contains the SSL (client) extensions */
+};
+
+typedef struct _SSL SSL;
+
+struct _SSL_CTX
+{
+    uint32_t options;
+    uint8_t chain_length;
+    RSA_CTX *rsa_ctx;
+#ifdef CONFIG_SSL_CERT_VERIFICATION
+    CA_CERT_CTX *ca_cert_ctx;
+#endif
+    SSL *head;
+    SSL *tail;
+    SSL_CERT certs[CONFIG_SSL_MAX_CERTS];
+#ifndef CONFIG_SSL_SKELETON_MODE
+    uint16_t num_sessions;
+    SSL_SESSION **ssl_sessions;
+#endif
+#ifdef CONFIG_SSL_CTX_MUTEXING
+    SSL_CTX_MUTEX_TYPE mutex;
+#endif
+#ifdef CONFIG_OPENSSL_COMPATIBLE
+    void *bonus_attr;
+#endif
+};
+
+typedef struct _SSL_CTX SSL_CTX;
+
+/* backwards compatibility */
+typedef struct _SSL_CTX SSLCTX;
+
+extern const uint8_t ssl_prot_prefs[NUM_PROTOCOLS];
+
+SSL *ssl_new(SSL_CTX *ssl_ctx, long client_fd);
+void disposable_new(SSL *ssl);
+void disposable_free(SSL *ssl);
+int send_packet(SSL *ssl, uint8_t protocol, 
+        const uint8_t *in, int length);
+int do_svr_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len);
+int do_clnt_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len);
+int process_finished(SSL *ssl, uint8_t *buf, int hs_len);
+int process_sslv23_client_hello(SSL *ssl);
+int send_alert(SSL *ssl, int error_code);
+int send_finished(SSL *ssl);
+int send_certificate(SSL *ssl);
+int basic_read(SSL *ssl, uint8_t **in_data);
+int send_change_cipher_spec(SSL *ssl);
+int finished_digest(SSL *ssl, const char *label, uint8_t *digest);
+void generate_master_secret(SSL *ssl, const uint8_t *premaster_secret);
+void add_packet(SSL *ssl, const uint8_t *pkt, int len);
+int add_cert(SSL_CTX *ssl_ctx, const uint8_t *buf, int len);
+int add_private_key(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj);
+void ssl_obj_free(SSLObjLoader *ssl_obj);
+int pkcs8_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password);
+int pkcs12_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password);
+int load_key_certs(SSL_CTX *ssl_ctx);
+#ifdef CONFIG_SSL_CERT_VERIFICATION
+int add_cert_auth(SSL_CTX *ssl_ctx, const uint8_t *buf, int len);
+void remove_ca_certs(CA_CERT_CTX *ca_cert_ctx);
+#endif
+#ifdef CONFIG_SSL_ENABLE_CLIENT
+int do_client_connect(SSL *ssl);
+#endif
+
+#ifdef CONFIG_SSL_DIAGNOSTICS
+void DISPLAY_STATE(SSL *ssl, int is_send, uint8_t state, int not_ok);
+void DISPLAY_BYTES(SSL *ssl, const char *format, 
+        const uint8_t *data, int size, ...);
+void DISPLAY_CERT(SSL *ssl, const X509_CTX *x509_ctx);
+void DISPLAY_RSA(SSL *ssl,  const RSA_CTX *rsa_ctx);
+void DISPLAY_ALERT(SSL *ssl, int alert);
+#else
+#define DISPLAY_STATE(A,B,C,D)
+#define DISPLAY_CERT(A,B)
+#define DISPLAY_RSA(A,B)
+#define DISPLAY_ALERT(A, B)
+#ifdef WIN32
+void DISPLAY_BYTES(SSL *ssl, const char *format,/* win32 has no variadic macros */
+        const uint8_t *data, int size, ...);
+#else
+#define DISPLAY_BYTES(A,B,C,D,...)
+#endif
+#endif
+
+//#ifdef CONFIG_SSL_CERT_VERIFICATION
+int process_certificate(SSL *ssl, X509_CTX **x509_ctx);
+//#endif
+
+SSL_SESSION *ssl_session_update(int max_sessions, 
+        SSL_SESSION *ssl_sessions[], SSL *ssl,
+        const uint8_t *session_id);
+void kill_ssl_session(SSL_SESSION **ssl_sessions, SSL *ssl);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif