Base version of ncurses-5.7 library
diff --git a/form/fty_ipv4.c b/form/fty_ipv4.c
new file mode 100644
index 0000000..5d1a209
--- /dev/null
+++ b/form/fty_ipv4.c
@@ -0,0 +1,105 @@
+/****************************************************************************
+ * Copyright (c) 1998-2004,2006 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 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 */