buffer.h revision 204917
122347Spst/* $OpenBSD: buffer.h,v 1.19 2010/02/09 03:56:28 djm Exp $ */ 222347Spst 322347Spst/* 429967Sache * Author: Tatu Ylonen <ylo@cs.hut.fi> 592914Smarkm * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 622347Spst * All rights reserved 722347Spst * Code for manipulating FIFO buffers. 822347Spst * 922347Spst * As far as I am concerned, the code I have written for this software 1022347Spst * can be used freely for any purpose. Any derived versions of this 1122347Spst * software must be clearly marked as such, and if the derived work is 1222347Spst * incompatible with the protocol description in the RFC file, it must be 1322347Spst * called by a name other than "ssh" or "Secure Shell". 1422347Spst */ 1522347Spst 1622347Spst#ifndef BUFFER_H 1722347Spst#define BUFFER_H 1892914Smarkm 1992914Smarkmtypedef struct { 2092914Smarkm u_char *buf; /* Buffer for data. */ 2159121Skris u_int alloc; /* Number of bytes allocated for data. */ 2259121Skris u_int offset; /* Offset of first byte containing data. */ 2329967Sache u_int end; /* Offset of last byte containing data. */ 2422347Spst} Buffer; 2522347Spst 2622347Spstvoid buffer_init(Buffer *); 2722347Spstvoid buffer_clear(Buffer *); 2822347Spstvoid buffer_free(Buffer *); 2922347Spst 3022347Spstu_int buffer_len(const Buffer *); 3122347Spstvoid *buffer_ptr(const Buffer *); 3222347Spst 3322347Spstvoid buffer_append(Buffer *, const void *, u_int); 3422347Spstvoid *buffer_append_space(Buffer *, u_int); 3522347Spst 3622347Spstint buffer_check_alloc(Buffer *, u_int); 3722347Spst 3822347Spstvoid buffer_get(Buffer *, void *, u_int); 3959121Skris 4059121Skrisvoid buffer_consume(Buffer *, u_int); 4122347Spstvoid buffer_consume_end(Buffer *, u_int); 4222347Spst 4329967Sachevoid buffer_dump(const Buffer *); 4422347Spst 4522347Spstint buffer_get_ret(Buffer *, void *, u_int); 4622347Spstint buffer_consume_ret(Buffer *, u_int); 4722347Spstint buffer_consume_end_ret(Buffer *, u_int); 4822347Spst 4922347Spst#include <openssl/bn.h> 5022347Spst 5122347Spstvoid buffer_put_bignum(Buffer *, const BIGNUM *); 5222347Spstvoid buffer_put_bignum2(Buffer *, const BIGNUM *); 5322347Spstvoid buffer_get_bignum(Buffer *, BIGNUM *); 5422347Spstvoid buffer_get_bignum2(Buffer *, BIGNUM *); 5522347Spst 5622347Spstu_short buffer_get_short(Buffer *); 5722347Spstvoid buffer_put_short(Buffer *, u_short); 5822347Spst 5992914Smarkmu_int buffer_get_int(Buffer *); 6022347Spstvoid buffer_put_int(Buffer *, u_int); 6192914Smarkm 6222347Spstu_int64_t buffer_get_int64(Buffer *); 6322347Spstvoid buffer_put_int64(Buffer *, u_int64_t); 6422347Spst 6522347Spstint buffer_get_char(Buffer *); 6622347Spstvoid buffer_put_char(Buffer *, int); 6722347Spst 6822347Spstvoid *buffer_get_string(Buffer *, u_int *); 6922347Spstvoid *buffer_get_string_ptr(Buffer *, u_int *); 7022347Spstvoid buffer_put_string(Buffer *, const void *, u_int); 7122347Spstvoid buffer_put_cstring(Buffer *, const char *); 7260572Skris 7360572Skris#define buffer_skip_string(b) \ 7460572Skris do { u_int l = buffer_get_int(b); buffer_consume(b, l); } while (0) 7522347Spst 7660572Skrisint buffer_put_bignum_ret(Buffer *, const BIGNUM *); 7722347Spstint buffer_get_bignum_ret(Buffer *, BIGNUM *); 7822347Spstint buffer_put_bignum2_ret(Buffer *, const BIGNUM *); 7922347Spstint buffer_get_bignum2_ret(Buffer *, BIGNUM *); 8022347Spstint buffer_get_short_ret(u_short *, Buffer *); 8122347Spstint buffer_get_int_ret(u_int *, Buffer *); 8222347Spstint buffer_get_int64_ret(u_int64_t *, Buffer *); 8322347Spstvoid *buffer_get_string_ret(Buffer *, u_int *); 8492914Smarkmvoid *buffer_get_string_ptr_ret(Buffer *, u_int *); 8592914Smarkmint buffer_get_char_ret(char *, Buffer *); 8692914Smarkm 8792914Smarkm#endif /* BUFFER_H */ 8822347Spst