src/libstrongswan/printf_hook.c

   1 /**
   2  * @file printf_hook.c
   3  *
   4  * @brief Printf hook definitions and arginfo functions.
   5  *
   6  */
   7
   8 /*
   9  * Copyright (C) 2006 Martin Willi
  10  * Hochschule fuer Technik Rapperswil
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the
  14  * Free Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  19  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20  * for more details.
  21  */
  22
  23 #include "printf_hook.h"
  24
  25 /**
  26  * arginfo handler in printf() pointer
  27  */
  28 int arginfo_ptr(const struct printf_info *info, size_t n, int *argtypes)
  29 {
  30         if (n > 0)
  31         {
  32                 argtypes[0] = PA_POINTER;
  33         }
  34         return 1;
  35 }
  36
  37 /**
  38  * arginfo handler for one ptr, one int
  39  */
  40 int arginfo_ptr_int(const struct printf_info *info, size_t n, int *argtypes)
  41 {
  42         if (n > 1)
  43         {
  44                 argtypes[0] = PA_POINTER;
  45                 argtypes[1] = PA_INT;
  46         }
  47         return 2;
  48 }
  49
  50 /**
  51  * arginfo handler for two int arguments
  52  */
  53 int arginfo_int_int(const struct printf_info *info, size_t n, int *argtypes)
  54 {
  55         if (n > 1)
  56         {
  57                 argtypes[0] = PA_INT;
  58                 argtypes[1] = PA_INT;
  59         }
  60         return 2;
  61 }
  62
  63 /**
  64  * special arginfo handler respecting alt flag
  65  */
  66 int arginfo_int_alt_int_int(const struct printf_info *info, size_t n, int *argtypes)
  67 {
  68         if (info->alt)
  69         {
  70                 if (n > 1)
  71                 {
  72                         argtypes[0] = PA_INT;
  73                         argtypes[1] = PA_INT;
  74                 }
  75                 return 2;
  76         }
  77
  78         if (n > 0)
  79         {
  80                 argtypes[0] = PA_INT;
  81         }
  82         return 1;
  83 }
  84
  85 /**
  86  * special arginfo handler respecting alt flag
  87  */
  88 int arginfo_ptr_alt_ptr_int(const struct printf_info *info, size_t n, int *argtypes)
  89 {
  90         if (info->alt)
  91         {
  92                 if (n > 1)
  93                 {
  94                         argtypes[0] = PA_POINTER;
  95                         argtypes[1] = PA_INT;
  96                 }
  97                 return 2;
  98         }
  99
 100         if (n > 0)
 101         {
 102                 argtypes[0] = PA_POINTER;
 103         }
 104         return 1;
 105 }