config-readers.c

 
#include <math.h>
#include <float.h>
#include <winpr/config-readers.h>
 
#include "../log.h"
#define TAG WINPR_TAG("utils.config-readers")
 
BOOL winpr_config_apply_bool(const char* config, WINPR_JSON* json, const char* name, BOOL* dst)
{
  WINPR_ASSERT(dst);
 
  WINPR_JSON* obj = WINPR_JSON_GetObjectItemCaseSensitive(json, name);
  if (!obj)
    return FALSE;
 
  if (!WINPR_JSON_IsBool(obj))
  {
    WLog_WARN(TAG, "[%s] Invalid setting %s: must be of type bool", config, name);
    return FALSE;
  }
 
  *dst = WINPR_JSON_IsTrue(obj);
  return TRUE;
}
 
BOOL winpr_config_apply_string(const char* config, WINPR_JSON* json, const char* name, char** dst)
{
  WINPR_ASSERT(dst);
 
  WINPR_JSON* obj = WINPR_JSON_GetObjectItemCaseSensitive(json, name);
  if (!obj)
    return FALSE;
 
  if (!WINPR_JSON_IsString(obj))
  {
    WLog_WARN(TAG, "[%s] Invalid setting %s: must be of type string", config, name);
    return FALSE;
  }
 
  const char* val = WINPR_JSON_GetStringValue(obj);
  free(*dst);
  *dst = nullptr;
  if (val)
  {
    *dst = _strdup(val);
    if (!*dst)
      return FALSE;
  }
  return TRUE;
}
 
BOOL winpr_config_apply_uint32(const char* config, WINPR_JSON* json, const char* name, UINT32* dst)
{
  WINPR_ASSERT(dst);
 
  WINPR_JSON* obj = WINPR_JSON_GetObjectItemCaseSensitive(json, name);
  if (!obj)
    return FALSE;
 
  if (!WINPR_JSON_IsNumber(obj))
  {
    WLog_WARN(TAG, "[%s] Invalid setting %s: must be of type bool", config, name);
    return FALSE;
  }
 
  const double val = WINPR_JSON_GetNumberValue(obj);
 
  double integer = 0.0;
  const double fractional = modf(val, &integer);
  if (signbit(val) || isnan(val) || isinf(val) || (val > UINT32_MAX) ||
      (fabs(fractional) > DBL_EPSILON))
  {
    WLog_WARN(TAG, "[%s] Invalid setting %s: value must be 0 <= %f <= %" PRIu32, config, name,
              val, UINT32_MAX);
    return FALSE;
  }
 
  *dst = (UINT32)integer;
  return TRUE;
}