1 /* 2 * Dropbear - a SSH2 server 3 * 4 * Copyright (c) 2002,2003 Matt Johnston 5 * All rights reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. */ 24 25 #ifndef _BUFFER_H_ 26 27 #define _BUFFER_H_ 28 29 #include "includes.h" 30 31 struct buf { 32 33 unsigned char * data; 34 unsigned int len; /* the used size */ 35 unsigned int pos; 36 unsigned int size; /* the memory size */ 37 38 }; 39 40 typedef struct buf buffer; 41 42 buffer * buf_new(unsigned int size); 43 void buf_resize(buffer *buf, unsigned int newsize); 44 void buf_free(buffer* buf); 45 void buf_burn(buffer* buf); 46 buffer* buf_newcopy(buffer* buf); 47 void buf_setlen(buffer* buf, unsigned int len); 48 void buf_incrlen(buffer* buf, unsigned int incr); 49 void buf_setpos(buffer* buf, unsigned int pos); 50 void buf_incrpos(buffer* buf, int incr); /* -ve is ok, to go backwards */ 51 void buf_incrwritepos(buffer* buf, unsigned int incr); 52 unsigned char buf_getbyte(buffer* buf); 53 unsigned char buf_getbool(buffer* buf); 54 void buf_putbyte(buffer* buf, unsigned char val); 55 unsigned char* buf_getptr(buffer* buf, unsigned int len); 56 unsigned char* buf_getwriteptr(buffer* buf, unsigned int len); 57 unsigned char* buf_getstring(buffer* buf, unsigned int *retlen); 58 void buf_eatstring(buffer *buf); 59 void buf_putint(buffer* buf, unsigned int val); 60 void buf_putstring(buffer* buf, const unsigned char* str, unsigned int len); 61 void buf_putbytes(buffer *buf, const unsigned char *bytes, unsigned int len); 62 void buf_putmpint(buffer* buf, mp_int * mp); 63 int buf_getmpint(buffer* buf, mp_int* mp); 64 unsigned int buf_getint(buffer* buf); 65 66 #endif /* _BUFFER_H_ */ 67
