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| Current File : //usr/src/contrib/ncurses/form/fty_ipv4.c |
/****************************************************************************
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* "Software"), to deal in the Software without restriction, including *
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/***************************************************************************
* *
* Author : Per Foreby, perf@efd.lth.se *
* *
***************************************************************************/
#include "form.priv.h"
MODULE_ID("$Id: fty_ipv4.c,v 1.8 2006/12/02 19:33:02 tom 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, d2, d3, d4;
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,
Check_IPV4_Field,
Check_IPV4_Character,
NULL,
NULL
};
NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_IPV4 = &typeIPV4;
/* fty_ipv4.c ends here */