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Annotation of embedaddon/sudo/common/atomode.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 2013-2014 Todd C. Miller <Todd.Miller@courtesan.com>
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  */
                     16: 
                     17: #include <config.h>
                     18: 
                     19: #include <sys/types.h>
                     20: 
                     21: #include <stdio.h>
                     22: #ifdef STDC_HEADERS
                     23: # include <stdlib.h>
                     24: # include <stddef.h>
                     25: #else
                     26: # ifdef HAVE_STDLIB_H
                     27: #  include <stdlib.h>
                     28: # endif
                     29: #endif /* STDC_HEADERS */
                     30: #include <errno.h>
                     31: 
                     32: #define DEFAULT_TEXT_DOMAIN    "sudo"
                     33: #include "gettext.h"           /* must be included before missing.h */
                     34: 
                     35: #include "missing.h"
                     36: #include "sudo_debug.h"
                     37: #include "sudo_util.h"
                     38: 
                     39: /*
                     40:  * Parse an octal file mode in the range [0, 0777].
                     41:  * On success, returns the parsed mode and clears errstr.
                     42:  * On error, returns 0 and sets errstr.
                     43:  */
                     44: int
                     45: atomode(const char *cp, const char **errstr)
                     46: {
                     47:     char *ep;
                     48:     long lval;
                     49:     debug_decl(atomode, SUDO_DEBUG_UTIL)
                     50: 
                     51:     errno = 0;
                     52:     lval = strtol(cp, &ep, 8);
                     53:     if (ep == cp || *ep != '\0') {
                     54:        if (errstr != NULL)
                     55:            *errstr = N_("invalid value");
                     56:        errno = EINVAL;
                     57:        debug_return_int(0);
                     58:     }
                     59:     if (lval < 0 || lval > 0777) {
                     60:        if (errstr != NULL)
                     61:            *errstr = lval < 0 ? N_("value too small") : N_("value too large");
                     62:        errno = ERANGE;
                     63:        debug_return_int(0);
                     64:     }
                     65:     if (errstr != NULL)
                     66:        *errstr = NULL;
                     67:     debug_return_int((int)lval);
                     68: }