diff options
Diffstat (limited to 'ncurses-5.9/form/fty_ipv4.c')
| -rw-r--r-- | ncurses-5.9/form/fty_ipv4.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/ncurses-5.9/form/fty_ipv4.c b/ncurses-5.9/form/fty_ipv4.c new file mode 100644 index 0000000..ed394e5 --- /dev/null +++ b/ncurses-5.9/form/fty_ipv4.c @@ -0,0 +1,120 @@ +/**************************************************************************** + * Copyright (c) 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("$Id$") + +/*--------------------------------------------------------------------------- +| 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, + 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 +}; + +NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_IPV4 = &typeIPV4; + +#if NCURSES_INTEROP_FUNCS +/* The next routines are to simplify the use of ncurses from + programming languages with restictions on interop with C level + constructs (e.g. variable access or va_list + ellipsis constructs) +*/ +NCURSES_EXPORT(FIELDTYPE *) +_nc_TYPE_IPV4(void) +{ + return TYPE_IPV4; +} +#endif + +/* fty_ipv4.c ends here */ |