buffer.h revision 221420
1221420Sdes/* $OpenBSD: buffer.h,v 1.21 2010/08/31 11:54:45 djm Exp $ */ 292555Sdes 357429Smarkm/* 457429Smarkm * Author: Tatu Ylonen <ylo@cs.hut.fi> 557429Smarkm * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 657429Smarkm * All rights reserved 757429Smarkm * Code for manipulating FIFO buffers. 860573Skris * 965668Skris * As far as I am concerned, the code I have written for this software 1065668Skris * can be used freely for any purpose. Any derived versions of this 1165668Skris * software must be clearly marked as such, and if the derived work is 1265668Skris * incompatible with the protocol description in the RFC file, it must be 1365668Skris * called by a name other than "ssh" or "Secure Shell". 1457429Smarkm */ 1557429Smarkm 1657429Smarkm#ifndef BUFFER_H 1757429Smarkm#define BUFFER_H 1857429Smarkm 1957429Smarkmtypedef struct { 2092555Sdes u_char *buf; /* Buffer for data. */ 2192555Sdes u_int alloc; /* Number of bytes allocated for data. */ 2292555Sdes u_int offset; /* Offset of first byte containing data. */ 2392555Sdes u_int end; /* Offset of last byte containing data. */ 2457429Smarkm} Buffer; 2557429Smarkm 2692555Sdesvoid buffer_init(Buffer *); 2792555Sdesvoid buffer_clear(Buffer *); 2892555Sdesvoid buffer_free(Buffer *); 2957429Smarkm 30204917Sdesu_int buffer_len(const Buffer *); 31204917Sdesvoid *buffer_ptr(const Buffer *); 3257429Smarkm 3392555Sdesvoid buffer_append(Buffer *, const void *, u_int); 3492555Sdesvoid *buffer_append_space(Buffer *, u_int); 3557429Smarkm 36162852Sdesint buffer_check_alloc(Buffer *, u_int); 37162852Sdes 3892555Sdesvoid buffer_get(Buffer *, void *, u_int); 3957429Smarkm 4092555Sdesvoid buffer_consume(Buffer *, u_int); 4192555Sdesvoid buffer_consume_end(Buffer *, u_int); 4257429Smarkm 43204917Sdesvoid buffer_dump(const Buffer *); 4457429Smarkm 45146998Sdesint buffer_get_ret(Buffer *, void *, u_int); 46146998Sdesint buffer_consume_ret(Buffer *, u_int); 47146998Sdesint buffer_consume_end_ret(Buffer *, u_int); 48146998Sdes 49162852Sdes#include <openssl/bn.h> 50162852Sdes 51162852Sdesvoid buffer_put_bignum(Buffer *, const BIGNUM *); 52162852Sdesvoid buffer_put_bignum2(Buffer *, const BIGNUM *); 53162852Sdesvoid buffer_get_bignum(Buffer *, BIGNUM *); 54162852Sdesvoid buffer_get_bignum2(Buffer *, BIGNUM *); 55162852Sdes 56162852Sdesu_short buffer_get_short(Buffer *); 57162852Sdesvoid buffer_put_short(Buffer *, u_short); 58162852Sdes 59162852Sdesu_int buffer_get_int(Buffer *); 60162852Sdesvoid buffer_put_int(Buffer *, u_int); 61162852Sdes 62162852Sdesu_int64_t buffer_get_int64(Buffer *); 63162852Sdesvoid buffer_put_int64(Buffer *, u_int64_t); 64162852Sdes 65162852Sdesint buffer_get_char(Buffer *); 66162852Sdesvoid buffer_put_char(Buffer *, int); 67162852Sdes 68162852Sdesvoid *buffer_get_string(Buffer *, u_int *); 69181111Sdesvoid *buffer_get_string_ptr(Buffer *, u_int *); 70162852Sdesvoid buffer_put_string(Buffer *, const void *, u_int); 71221420Sdeschar *buffer_get_cstring(Buffer *, u_int *); 72162852Sdesvoid buffer_put_cstring(Buffer *, const char *); 73162852Sdes 74162852Sdes#define buffer_skip_string(b) \ 75162852Sdes do { u_int l = buffer_get_int(b); buffer_consume(b, l); } while (0) 76162852Sdes 77162852Sdesint buffer_put_bignum_ret(Buffer *, const BIGNUM *); 78162852Sdesint buffer_get_bignum_ret(Buffer *, BIGNUM *); 79162852Sdesint buffer_put_bignum2_ret(Buffer *, const BIGNUM *); 80162852Sdesint buffer_get_bignum2_ret(Buffer *, BIGNUM *); 81162852Sdesint buffer_get_short_ret(u_short *, Buffer *); 82162852Sdesint buffer_get_int_ret(u_int *, Buffer *); 83162852Sdesint buffer_get_int64_ret(u_int64_t *, Buffer *); 84162852Sdesvoid *buffer_get_string_ret(Buffer *, u_int *); 85221420Sdeschar *buffer_get_cstring_ret(Buffer *, u_int *); 86204917Sdesvoid *buffer_get_string_ptr_ret(Buffer *, u_int *); 87162852Sdesint buffer_get_char_ret(char *, Buffer *); 88162852Sdes 89221420Sdes#ifdef OPENSSL_HAS_ECC 90221420Sdes#include <openssl/ec.h> 91221420Sdes 92221420Sdesint buffer_put_ecpoint_ret(Buffer *, const EC_GROUP *, const EC_POINT *); 93221420Sdesvoid buffer_put_ecpoint(Buffer *, const EC_GROUP *, const EC_POINT *); 94221420Sdesint buffer_get_ecpoint_ret(Buffer *, const EC_GROUP *, EC_POINT *); 95221420Sdesvoid buffer_get_ecpoint(Buffer *, const EC_GROUP *, EC_POINT *); 96221420Sdes#endif 97221420Sdes 9857429Smarkm#endif /* BUFFER_H */ 99