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-
- /*
- * THIS CODE IS SPECIFICALLY EXEMPTED FROM THE NCURSES PACKAGE COPYRIGHT.
- * You may freely copy it for use as a template for your own field types.
- * If you develop a field type that might be of general use, please send
- * it back to the ncurses maintainers for inclusion in the next version.
- */
- /***************************************************************************
- * *
- * Author : Per Foreby, perf@efd.lth.se *
- * *
- ***************************************************************************/
-
- #include "form.priv.h"
-
- MODULE_ID("$Id: fty_ipv4.c,v 1.4 2000/12/09 23:46:12 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((unsigned char)*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 (*bp && isspace((unsigned char)*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(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 */
-