usr/src/lib/libcryptoutil/common/util.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include <cryptoutil.h>
  29 #include <strings.h>
  30 #include <stdio.h>
  31 #include <tzfile.h>
  32
  33 /*
  34  * This function returns a fullpath based on the "dir" and "filepath" input
  35  * arugments.
  36  * - If the filepath specified does not start with a "/" and the directory
  37  *   is also given, prepend the directory to the filename.
  38  * - If only dir or filepath is given, this function returns a copy of the
  39  *   given argument.
  40  * - If the filepath is fully qualified already and the "dir" is also
  41  *   given, return NULL to indicate an error.
  42  */
  43 char *
  44 get_fullpath(char *dir, char *filepath)
  45 {
  46         char *fullpath = NULL;
  47         int pathlen = 0;
  48         int dirlen = 0;
  49
  50         if (filepath != NULL)
  51                 pathlen = strlen(filepath);
  52
  53         if (dir != NULL)
  54                 dirlen = strlen(dir);
  55
  56         if (pathlen > 0 && dirlen > 0) {
  57                 if (filepath[0] != '/') {
  58                         int len = pathlen + dirlen + 2;
  59                         fullpath = (char *)malloc(len);
  60                         if (fullpath != NULL)
  61                                 (void) snprintf(fullpath, len, "%s/%s",
  62                                     dir, filepath);
  63                 } else {
  64                         return (NULL);
  65                 }
  66         } else if (pathlen > 0) {
  67                 fullpath = (char *)strdup(filepath);
  68         } else if (dirlen > 0) {
  69                 fullpath = (char *)strdup(dir);
  70         }
  71
  72         return (fullpath);
  73 }
  74
  75 /*
  76  * This function converts the input string to the value of time
  77  * in seconds.
  78  * - If the input string is NULL, return zero second.
  79  * - The input string needs to be in the form of:
  80  *   number-second(s), number-minute(s), number-hour(s) or
  81  *   number-day(s).
  82  */
  83 int
  84 str2lifetime(char *ltimestr, uint32_t *ltime)
  85 {
  86         int num;
  87         char timetok[10];
  88
  89         if (ltimestr == NULL || !strlen(ltimestr)) {
  90                 *ltime = 0;
  91                 return (0);
  92         }
  93
  94         (void) memset(timetok, 0, sizeof (timetok));
  95         if (sscanf(ltimestr, "%d-%08s", &num, timetok) != 2)
  96                 return (-1);
  97
  98         if (!strcasecmp(timetok, "second") ||
  99                 !strcasecmp(timetok, "seconds")) {
 100                 *ltime = num;
 101         } else if (!strcasecmp(timetok, "minute") ||
 102                 !strcasecmp(timetok, "minutes")) {
 103                 *ltime = num * SECSPERMIN;
 104         } else if (!strcasecmp(timetok, "day") ||
 105             !strcasecmp(timetok, "days")) {
 106                 *ltime = num * SECSPERDAY;
 107         } else if (!strcasecmp(timetok, "hour") ||
 108                 !strcasecmp(timetok, "hours")) {
 109                 *ltime = num * SECSPERHOUR;
 110         } else {
 111                 *ltime = 0;
 112                 return (-1);
 113         }
 114
 115         return (0);
 116 }