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/* $OpenBSD: fty_ipv4.c,v 1.8 2023/10/17 09:52:10 nicm Exp $ */
/****************************************************************************
* Copyright 2020,2021 Thomas E. Dickey *
* Copyright 1998-2006,2009 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/***************************************************************************
* *
* Author : Per Foreby, perf@efd.lth.se *
* *
***************************************************************************/
#include "form.priv.h"
MODULE_ID("$Id: fty_ipv4.c,v 1.8 2023/10/17 09:52:10 nicm Exp $")
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_IPV4_Field(
| FIELD * field,
| const void * argp)
|
| Description : Validate buffer content to be a valid IP number (Ver. 4)
|
| Return Values : TRUE - field is valid
| FALSE - field is invalid
+--------------------------------------------------------------------------*/
static bool
Check_IPV4_Field(FIELD *field, const void *argp GCC_UNUSED)
{
char *bp = field_buffer(field, 0);
int num = 0, len;
unsigned int d1 = 0, d2 = 0, d3 = 0, d4 = 0;
if (isdigit(UChar(*bp))) /* Must start with digit */
{
num = sscanf(bp, "%u.%u.%u.%u%n", &d1, &d2, &d3, &d4, &len);
if (num == 4)
{
bp += len; /* Make bp point to what sscanf() left */
while (isspace(UChar(*bp)))
bp++; /* Allow trailing whitespace */
}
}
return ((num != 4 || *bp || d1 > 255 || d2 > 255
|| d3 > 255 || d4 > 255) ? FALSE : TRUE);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_IPV4_Character(
| int c,
| const void *argp )
|
| Description : Check a character for unsigned type or period.
|
| Return Values : TRUE - character is valid
| FALSE - character is invalid
+--------------------------------------------------------------------------*/
static bool
Check_IPV4_Character(int c, const void *argp GCC_UNUSED)
{
return ((isdigit(UChar(c)) || (c == '.')) ? TRUE : FALSE);
}
static FIELDTYPE typeIPV4 =
{
_RESIDENT,
1, /* this is mutable, so we can't be const */
(FIELDTYPE *)0,
(FIELDTYPE *)0,
NULL,
NULL,
NULL,
INIT_FT_FUNC(Check_IPV4_Field),
INIT_FT_FUNC(Check_IPV4_Character),
INIT_FT_FUNC(NULL),
INIT_FT_FUNC(NULL),
#if NCURSES_INTEROP_FUNCS
NULL
#endif
};
FORM_EXPORT_VAR(FIELDTYPE *) TYPE_IPV4 = &typeIPV4;
#if NCURSES_INTEROP_FUNCS
/* The next routines are to simplify the use of ncurses from
programming languages with restrictions on interop with C level
constructs (e.g. variable access or va_list + ellipsis constructs)
*/
FORM_EXPORT(FIELDTYPE *)
_nc_TYPE_IPV4(void)
{
return TYPE_IPV4;
}
#endif
/* fty_ipv4.c ends here */
|
