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Annotation of embedaddon/sudo/plugins/sudoers/hexchar.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (c) 2013 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: #include <stdio.h>
        !            21: 
        !            22: #include "missing.h"
        !            23: #include "sudo_debug.h"
        !            24: #include "error.h"
        !            25: 
        !            26: int
        !            27: hexchar(const char *s)
        !            28: {
        !            29:     unsigned char result[2];
        !            30:     int i;
        !            31:     debug_decl(hexchar, SUDO_DEBUG_UTIL)
        !            32: 
        !            33:     for (i = 0; i < 2; i++) {
        !            34:        switch (s[i]) {
        !            35:        case '0':
        !            36:            result[i] = 0;
        !            37:            break;
        !            38:        case '1':
        !            39:            result[i] = 1;
        !            40:            break;
        !            41:        case '2':
        !            42:            result[i] = 2;
        !            43:            break;
        !            44:        case '3':
        !            45:            result[i] = 3;
        !            46:            break;
        !            47:        case '4':
        !            48:            result[i] = 4;
        !            49:            break;
        !            50:        case '5':
        !            51:            result[i] = 5;
        !            52:            break;
        !            53:        case '6':
        !            54:            result[i] = 6;
        !            55:            break;
        !            56:        case '7':
        !            57:            result[i] = 7;
        !            58:            break;
        !            59:        case '8':
        !            60:            result[i] = 8;
        !            61:            break;
        !            62:        case '9':
        !            63:            result[i] = 9;
        !            64:            break;
        !            65:        case 'A':
        !            66:        case 'a':
        !            67:            result[i] = 10;
        !            68:            break;
        !            69:        case 'B':
        !            70:        case 'b':
        !            71:            result[i] = 11;
        !            72:            break;
        !            73:        case 'C':
        !            74:        case 'c':
        !            75:            result[i] = 12;
        !            76:            break;
        !            77:        case 'D':
        !            78:        case 'd':
        !            79:            result[i] = 13;
        !            80:            break;
        !            81:        case 'E':
        !            82:        case 'e':
        !            83:            result[i] = 14;
        !            84:            break;
        !            85:        case 'F':
        !            86:        case 'f':
        !            87:            result[i] = 15;
        !            88:            break;
        !            89:        default:
        !            90:            /* Should not happen. */
        !            91:            fatalx("internal error, \\x%s not in proper hex format", s);
        !            92:        }
        !            93:     }
        !            94:     debug_return_int((result[0] << 4) | result[1]);
        !            95: }