buffer.h 2.8 KB

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  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. #ifndef DROPBEAR_BUFFER_H_
  25. #define DROPBEAR_BUFFER_H_
  26. #include "includes.h"
  27. struct buf {
  28. /* don't manipulate data member outside of buffer.c - it
  29. is a pointer into the malloc holding buffer itself */
  30. unsigned char * data;
  31. unsigned int len; /* the used size */
  32. unsigned int pos;
  33. unsigned int size; /* the memory size */
  34. };
  35. typedef struct buf buffer;
  36. buffer * buf_new(unsigned int size);
  37. /* Possibly returns a new buffer*, like realloc() */
  38. buffer * buf_resize(buffer *buf, unsigned int newsize);
  39. void buf_free(buffer* buf);
  40. void buf_burn(buffer* buf);
  41. buffer* buf_newcopy(buffer* buf);
  42. void buf_setlen(buffer* buf, unsigned int len);
  43. void buf_incrlen(buffer* buf, unsigned int incr);
  44. void buf_setpos(buffer* buf, unsigned int pos);
  45. void buf_incrpos(buffer* buf, int incr); /* -ve is ok, to go backwards */
  46. void buf_incrwritepos(buffer* buf, unsigned int incr);
  47. unsigned char buf_getbyte(buffer* buf);
  48. unsigned char buf_getbool(buffer* buf);
  49. void buf_putbyte(buffer* buf, unsigned char val);
  50. unsigned char* buf_getptr(buffer* buf, unsigned int len);
  51. unsigned char* buf_getwriteptr(buffer* buf, unsigned int len);
  52. char* buf_getstring(buffer* buf, unsigned int *retlen);
  53. buffer * buf_getstringbuf(buffer *buf);
  54. void buf_eatstring(buffer *buf);
  55. void buf_putint(buffer* buf, unsigned int val);
  56. void buf_putstring(buffer* buf, const char* str, unsigned int len);
  57. void buf_putbufstring(buffer *buf, const buffer* buf_str);
  58. void buf_putbytes(buffer *buf, const unsigned char *bytes, unsigned int len);
  59. void buf_putmpint(buffer* buf, mp_int * mp);
  60. int buf_getmpint(buffer* buf, mp_int* mp);
  61. unsigned int buf_getint(buffer* buf);
  62. #endif /* DROPBEAR_BUFFER_H_ */