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Annotation of src/usr.bin/ssh/buffer.h, Revision 1.22

1.22    ! djm         1: /* $OpenBSD: buffer.h,v 1.21 2010/08/31 11:54:45 djm Exp $ */
1.11      stevesk     2:
1.1       deraadt     3: /*
1.2       deraadt     4:  * Author: Tatu Ylonen <ylo@cs.hut.fi>
                      5:  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                      6:  *                    All rights reserved
                      7:  * Code for manipulating FIFO buffers.
1.4       markus      8:  *
1.6       deraadt     9:  * As far as I am concerned, the code I have written for this software
                     10:  * can be used freely for any purpose.  Any derived versions of this
                     11:  * software must be clearly marked as such, and if the derived work is
                     12:  * incompatible with the protocol description in the RFC file, it must be
                     13:  * called by a name other than "ssh" or "Secure Shell".
1.2       deraadt    14:  */
1.1       deraadt    15:
                     16: #ifndef BUFFER_H
                     17: #define BUFFER_H
                     18:
1.2       deraadt    19: typedef struct {
1.10      stevesk    20:        u_char  *buf;           /* Buffer for data. */
1.9       markus     21:        u_int    alloc;         /* Number of bytes allocated for data. */
                     22:        u_int    offset;        /* Offset of first byte containing data. */
                     23:        u_int    end;           /* Offset of last byte containing data. */
1.2       deraadt    24: }       Buffer;
1.13      markus     25:
1.9       markus     26: void    buffer_init(Buffer *);
                     27: void    buffer_clear(Buffer *);
                     28: void    buffer_free(Buffer *);
1.1       deraadt    29:
1.19      djm        30: u_int   buffer_len(const Buffer *);
                     31: void   *buffer_ptr(const Buffer *);
1.9       markus     32:
1.10      stevesk    33: void    buffer_append(Buffer *, const void *, u_int);
                     34: void   *buffer_append_space(Buffer *, u_int);
1.15      djm        35:
                     36: int     buffer_check_alloc(Buffer *, u_int);
1.9       markus     37:
1.10      stevesk    38: void    buffer_get(Buffer *, void *, u_int);
1.9       markus     39:
                     40: void    buffer_consume(Buffer *, u_int);
                     41: void    buffer_consume_end(Buffer *, u_int);
                     42:
1.19      djm        43: void     buffer_dump(const Buffer *);
1.12      djm        44:
                     45: int     buffer_get_ret(Buffer *, void *, u_int);
                     46: int     buffer_consume_ret(Buffer *, u_int);
                     47: int     buffer_consume_end_ret(Buffer *, u_int);
1.16      deraadt    48:
                     49: #include <openssl/bn.h>
                     50:
                     51: void    buffer_put_bignum(Buffer *, const BIGNUM *);
                     52: void    buffer_put_bignum2(Buffer *, const BIGNUM *);
                     53: void   buffer_get_bignum(Buffer *, BIGNUM *);
                     54: void   buffer_get_bignum2(Buffer *, BIGNUM *);
                     55:
                     56: u_short        buffer_get_short(Buffer *);
                     57: void   buffer_put_short(Buffer *, u_short);
                     58:
                     59: u_int  buffer_get_int(Buffer *);
                     60: void    buffer_put_int(Buffer *, u_int);
                     61:
                     62: u_int64_t buffer_get_int64(Buffer *);
                     63: void   buffer_put_int64(Buffer *, u_int64_t);
                     64:
                     65: int     buffer_get_char(Buffer *);
                     66: void    buffer_put_char(Buffer *, int);
                     67:
                     68: void   *buffer_get_string(Buffer *, u_int *);
1.17      markus     69: void   *buffer_get_string_ptr(Buffer *, u_int *);
1.16      deraadt    70: void    buffer_put_string(Buffer *, const void *, u_int);
1.20      djm        71: char   *buffer_get_cstring(Buffer *, u_int *);
1.16      deraadt    72: void   buffer_put_cstring(Buffer *, const char *);
                     73:
                     74: #define buffer_skip_string(b) \
                     75:     do { u_int l = buffer_get_int(b); buffer_consume(b, l); } while (0)
                     76:
                     77: int    buffer_put_bignum_ret(Buffer *, const BIGNUM *);
                     78: int    buffer_get_bignum_ret(Buffer *, BIGNUM *);
                     79: int    buffer_put_bignum2_ret(Buffer *, const BIGNUM *);
                     80: int    buffer_get_bignum2_ret(Buffer *, BIGNUM *);
                     81: int    buffer_get_short_ret(u_short *, Buffer *);
                     82: int    buffer_get_int_ret(u_int *, Buffer *);
                     83: int    buffer_get_int64_ret(u_int64_t *, Buffer *);
                     84: void   *buffer_get_string_ret(Buffer *, u_int *);
1.20      djm        85: char   *buffer_get_cstring_ret(Buffer *, u_int *);
1.18      djm        86: void   *buffer_get_string_ptr_ret(Buffer *, u_int *);
1.22    ! djm        87: int    buffer_get_char_ret(u_char *, Buffer *);
1.21      djm        88:
                     89: #include <openssl/ec.h>
                     90:
                     91: int    buffer_put_ecpoint_ret(Buffer *, const EC_GROUP *, const EC_POINT *);
                     92: void   buffer_put_ecpoint(Buffer *, const EC_GROUP *, const EC_POINT *);
                     93: int    buffer_get_ecpoint_ret(Buffer *, const EC_GROUP *, EC_POINT *);
                     94: void   buffer_get_ecpoint(Buffer *, const EC_GROUP *, EC_POINT *);
1.1       deraadt    95:
1.2       deraadt    96: #endif                         /* BUFFER_H */