crypto/libressl/tls/tls_internal.h

   1 /* $OpenBSD: tls_internal.h,v 1.31 2016/07/07 14:09:03 jsing Exp $ */
   2 /*
   3  * Copyright (c) 2014 Jeremie Courreges-Anglas <jca@openbsd.org>
   4  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #ifndef HEADER_TLS_INTERNAL_H
  20 #define HEADER_TLS_INTERNAL_H
  21
  22 #include <arpa/inet.h>
  23 #include <netinet/in.h>
  24
  25 #include <openssl/ssl.h>
  26
  27 #ifndef _PATH_SSL_CA_FILE
  28 #define _PATH_SSL_CA_FILE "/etc/ssl/cert.pem"
  29 #endif
  30
  31 #define TLS_CIPHERS_DEFAULT     "TLSv1.2+AEAD+ECDHE:TLSv1.2+AEAD+DHE"
  32 #define TLS_CIPHERS_COMPAT      "HIGH:!aNULL"
  33 #define TLS_CIPHERS_LEGACY      "HIGH:MEDIUM:!aNULL"
  34 #define TLS_CIPHERS_ALL         "ALL:!aNULL:!eNULL"
  35
  36 union tls_addr {
  37         struct in_addr ip4;
  38         struct in6_addr ip6;
  39 };
  40
  41 struct tls_error {
  42         char *msg;
  43         int num;
  44 };
  45
  46 struct tls_keypair {
  47         struct tls_keypair *next;
  48
  49         const char *cert_file;
  50         char *cert_mem;
  51         size_t cert_len;
  52         const char *key_file;
  53         char *key_mem;
  54         size_t key_len;
  55 };
  56
  57 struct tls_config {
  58         struct tls_error error;
  59
  60         const char *ca_file;
  61         const char *ca_path;
  62         char *ca_mem;
  63         size_t ca_len;
  64         const char *ciphers;
  65         int ciphers_server;
  66         int dheparams;
  67         int ecdhecurve;
  68         struct tls_keypair *keypair;
  69         uint32_t protocols;
  70         int verify_cert;
  71         int verify_client;
  72         int verify_depth;
  73         int verify_name;
  74         int verify_time;
  75 };
  76
  77 struct tls_conninfo {
  78         char *issuer;
  79         char *subject;
  80         char *hash;
  81         char *serial;
  82         char *fingerprint;
  83         char *version;
  84         char *cipher;
  85         time_t notbefore;
  86         time_t notafter;
  87 };
  88
  89 #define TLS_CLIENT              (1 << 0)
  90 #define TLS_SERVER              (1 << 1)
  91 #define TLS_SERVER_CONN         (1 << 2)
  92
  93 #define TLS_EOF_NO_CLOSE_NOTIFY (1 << 0)
  94 #define TLS_HANDSHAKE_COMPLETE  (1 << 1)
  95
  96 struct tls {
  97         struct tls_config *config;
  98         struct tls_error error;
  99
 100         uint32_t flags;
 101         uint32_t state;
 102
 103         char *servername;
 104         int socket;
 105
 106         SSL *ssl_conn;
 107         SSL_CTX *ssl_ctx;
 108         X509 *ssl_peer_cert;
 109         struct tls_conninfo *conninfo;
 110 };
 111
 112 struct tls *tls_new(void);
 113 struct tls *tls_server_conn(struct tls *ctx);
 114
 115 int tls_check_name(struct tls *ctx, X509 *cert, const char *servername);
 116 int tls_configure_keypair(struct tls *ctx, SSL_CTX *ssl_ctx,
 117     struct tls_keypair *keypair, int required);
 118 int tls_configure_server(struct tls *ctx);
 119 int tls_configure_ssl(struct tls *ctx);
 120 int tls_configure_ssl_verify(struct tls *ctx, int verify);
 121 int tls_handshake_client(struct tls *ctx);
 122 int tls_handshake_server(struct tls *ctx);
 123 int tls_host_port(const char *hostport, char **host, char **port);
 124
 125 int tls_error_set(struct tls_error *error, const char *fmt, ...)
 126     __attribute__((__format__ (printf, 2, 3)))
 127     __attribute__((__nonnull__ (2)));
 128 int tls_error_setx(struct tls_error *error, const char *fmt, ...)
 129     __attribute__((__format__ (printf, 2, 3)))
 130     __attribute__((__nonnull__ (2)));
 131 int tls_config_set_error(struct tls_config *cfg, const char *fmt, ...)
 132     __attribute__((__format__ (printf, 2, 3)))
 133     __attribute__((__nonnull__ (2)));
 134 int tls_config_set_errorx(struct tls_config *cfg, const char *fmt, ...)
 135     __attribute__((__format__ (printf, 2, 3)))
 136     __attribute__((__nonnull__ (2)));
 137 int tls_set_error(struct tls *ctx, const char *fmt, ...)
 138     __attribute__((__format__ (printf, 2, 3)))
 139     __attribute__((__nonnull__ (2)));
 140 int tls_set_errorx(struct tls *ctx, const char *fmt, ...)
 141     __attribute__((__format__ (printf, 2, 3)))
 142     __attribute__((__nonnull__ (2)));
 143
 144 int tls_ssl_error(struct tls *ctx, SSL *ssl_conn, int ssl_ret,
 145     const char *prefix);
 146
 147 int tls_get_conninfo(struct tls *ctx);
 148 void tls_free_conninfo(struct tls_conninfo *conninfo);
 149
 150 int asn1_time_parse(const char *, size_t, struct tm *, int);
 151
 152 #endif /* HEADER_TLS_INTERNAL_H */