crypto/openssh/buffer.h

   1 /* $OpenBSD: buffer.h,v 1.25 2014/04/30 05:29:56 djm Exp $ */
   2
   3 /*
   4  * Copyright (c) 2012 Damien Miller <djm@mindrot.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 /* Emulation wrappers for legacy OpenSSH buffer API atop sshbuf */
  20
  21 #ifndef BUFFER_H
  22 #define BUFFER_H
  23
  24 #include "sshbuf.h"
  25
  26 typedef struct sshbuf Buffer;
  27
  28 #define buffer_init(b)          sshbuf_init(b)
  29 #define buffer_clear(b)         sshbuf_reset(b)
  30 #define buffer_free(b)          sshbuf_free(b)
  31 #define buffer_dump(b)          sshbuf_dump(b, stderr)
  32
  33 /* XXX cast is safe: sshbuf never stores more than len 2^31 */
  34 #define buffer_len(b)           ((u_int) sshbuf_len(b))
  35 #define buffer_ptr(b)           sshbuf_mutable_ptr(b)
  36
  37 void     buffer_append(Buffer *, const void *, u_int);
  38 void    *buffer_append_space(Buffer *, u_int);
  39 int      buffer_check_alloc(Buffer *, u_int);
  40 void     buffer_get(Buffer *, void *, u_int);
  41
  42 void     buffer_consume(Buffer *, u_int);
  43 void     buffer_consume_end(Buffer *, u_int);
  44
  45
  46 int      buffer_get_ret(Buffer *, void *, u_int);
  47 int      buffer_consume_ret(Buffer *, u_int);
  48 int      buffer_consume_end_ret(Buffer *, u_int);
  49
  50 #include <openssl/objects.h>
  51 #include <openssl/bn.h>
  52 void    buffer_put_bignum(Buffer *, const BIGNUM *);
  53 void    buffer_put_bignum2(Buffer *, const BIGNUM *);
  54 void    buffer_get_bignum(Buffer *, BIGNUM *);
  55 void    buffer_get_bignum2(Buffer *, BIGNUM *);
  56 void    buffer_put_bignum2_from_string(Buffer *, const u_char *, u_int);
  57
  58 u_short buffer_get_short(Buffer *);
  59 void    buffer_put_short(Buffer *, u_short);
  60
  61 u_int   buffer_get_int(Buffer *);
  62 void    buffer_put_int(Buffer *, u_int);
  63
  64 u_int64_t buffer_get_int64(Buffer *);
  65 void    buffer_put_int64(Buffer *, u_int64_t);
  66
  67 int     buffer_get_char(Buffer *);
  68 void    buffer_put_char(Buffer *, int);
  69
  70 void   *buffer_get_string(Buffer *, u_int *);
  71 const void *buffer_get_string_ptr(Buffer *, u_int *);
  72 void    buffer_put_string(Buffer *, const void *, u_int);
  73 char   *buffer_get_cstring(Buffer *, u_int *);
  74 void    buffer_put_cstring(Buffer *, const char *);
  75
  76 #define buffer_skip_string(b) (void)buffer_get_string_ptr(b, NULL);
  77
  78 int     buffer_put_bignum_ret(Buffer *, const BIGNUM *);
  79 int     buffer_get_bignum_ret(Buffer *, BIGNUM *);
  80 int     buffer_put_bignum2_ret(Buffer *, const BIGNUM *);
  81 int     buffer_get_bignum2_ret(Buffer *, BIGNUM *);
  82 int     buffer_get_short_ret(u_short *, Buffer *);
  83 int     buffer_get_int_ret(u_int *, Buffer *);
  84 int     buffer_get_int64_ret(u_int64_t *, Buffer *);
  85 void    *buffer_get_string_ret(Buffer *, u_int *);
  86 char    *buffer_get_cstring_ret(Buffer *, u_int *);
  87 const void *buffer_get_string_ptr_ret(Buffer *, u_int *);
  88 int     buffer_get_char_ret(char *, Buffer *);
  89
  90 #ifdef OPENSSL_HAS_ECC
  91 #include <openssl/ec.h>
  92 int     buffer_put_ecpoint_ret(Buffer *, const EC_GROUP *, const EC_POINT *);
  93 void    buffer_put_ecpoint(Buffer *, const EC_GROUP *, const EC_POINT *);
  94 int     buffer_get_ecpoint_ret(Buffer *, const EC_GROUP *, EC_POINT *);
  95 void    buffer_get_ecpoint(Buffer *, const EC_GROUP *, EC_POINT *);
  96 #endif
  97
  98 #endif  /* BUFFER_H */
  99