12654012fSReza Sabdar /*
22654012fSReza Sabdar * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
32654012fSReza Sabdar * Use is subject to license terms.
42654012fSReza Sabdar */
52654012fSReza Sabdar
62654012fSReza Sabdar /*
72654012fSReza Sabdar * BSD 3 Clause License
82654012fSReza Sabdar *
92654012fSReza Sabdar * Copyright (c) 2007, The Storage Networking Industry Association.
102654012fSReza Sabdar *
112654012fSReza Sabdar * Redistribution and use in source and binary forms, with or without
122654012fSReza Sabdar * modification, are permitted provided that the following conditions
132654012fSReza Sabdar * are met:
142654012fSReza Sabdar * - Redistributions of source code must retain the above copyright
152654012fSReza Sabdar * notice, this list of conditions and the following disclaimer.
162654012fSReza Sabdar *
172654012fSReza Sabdar * - Redistributions in binary form must reproduce the above copyright
182654012fSReza Sabdar * notice, this list of conditions and the following disclaimer in
192654012fSReza Sabdar * the documentation and/or other materials provided with the
202654012fSReza Sabdar * distribution.
212654012fSReza Sabdar *
222654012fSReza Sabdar * - Neither the name of The Storage Networking Industry Association (SNIA)
232654012fSReza Sabdar * nor the names of its contributors may be used to endorse or promote
242654012fSReza Sabdar * products derived from this software without specific prior written
252654012fSReza Sabdar * permission.
262654012fSReza Sabdar *
272654012fSReza Sabdar * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
282654012fSReza Sabdar * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
292654012fSReza Sabdar * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
302654012fSReza Sabdar * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
312654012fSReza Sabdar * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
322654012fSReza Sabdar * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
332654012fSReza Sabdar * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
342654012fSReza Sabdar * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
352654012fSReza Sabdar * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
362654012fSReza Sabdar * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
372654012fSReza Sabdar * POSSIBILITY OF SUCH DAMAGE.
382654012fSReza Sabdar */
39*8b87c155SJan Kryl /* Copyright 2014 Nexenta Systems, Inc. All rights reserved. */
402654012fSReza Sabdar
412654012fSReza Sabdar #include <stdio.h>
422654012fSReza Sabdar #include <sys/types.h>
432654012fSReza Sabdar #include <string.h>
442654012fSReza Sabdar #include <ctype.h>
452654012fSReza Sabdar #include <stdlib.h>
462654012fSReza Sabdar #include <libndmp.h>
472654012fSReza Sabdar
482654012fSReza Sabdar #define NDMP_ENC_LEN 1024
492654012fSReza Sabdar #define NDMP_DEC_LEN 256
502654012fSReza Sabdar
512654012fSReza Sabdar static boolean_t ndmp_is_base64(unsigned char);
522654012fSReza Sabdar
532654012fSReza Sabdar static char *b64_data =
542654012fSReza Sabdar "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
552654012fSReza Sabdar
562654012fSReza Sabdar static boolean_t
ndmp_is_base64(unsigned char c)572654012fSReza Sabdar ndmp_is_base64(unsigned char c)
582654012fSReza Sabdar {
592654012fSReza Sabdar return (isalnum(c) || (c == '+') || (c == '/'));
602654012fSReza Sabdar }
612654012fSReza Sabdar
62*8b87c155SJan Kryl /* caller should use the encoded string and then free the string. */
632654012fSReza Sabdar char *
ndmp_base64_encode(const char * str_to_encode)64*8b87c155SJan Kryl ndmp_base64_encode(const char *str_to_encode)
652654012fSReza Sabdar {
662654012fSReza Sabdar int ret_cnt = 0;
672654012fSReza Sabdar int i = 0, j = 0;
682654012fSReza Sabdar char arr_3[3], arr_4[4];
692654012fSReza Sabdar int len = strlen(str_to_encode);
702654012fSReza Sabdar char *ret = malloc(NDMP_ENC_LEN);
712654012fSReza Sabdar
722654012fSReza Sabdar if (ret == NULL) {
732654012fSReza Sabdar ndmp_errno = ENDMP_MEM_ALLOC;
742654012fSReza Sabdar return (NULL);
752654012fSReza Sabdar }
762654012fSReza Sabdar
772654012fSReza Sabdar while (len--) {
782654012fSReza Sabdar arr_3[i++] = *(str_to_encode++);
792654012fSReza Sabdar if (i == 3) {
802654012fSReza Sabdar arr_4[0] = (arr_3[0] & 0xfc) >> 2;
812654012fSReza Sabdar arr_4[1] = ((arr_3[0] & 0x03) << 4) +
822654012fSReza Sabdar ((arr_3[1] & 0xf0) >> 4);
832654012fSReza Sabdar arr_4[2] = ((arr_3[1] & 0x0f) << 2) +
842654012fSReza Sabdar ((arr_3[2] & 0xc0) >> 6);
852654012fSReza Sabdar arr_4[3] = arr_3[2] & 0x3f;
862654012fSReza Sabdar
872654012fSReza Sabdar for (i = 0; i < 4; i++)
882654012fSReza Sabdar ret[ret_cnt++] = b64_data[arr_4[i]];
892654012fSReza Sabdar i = 0;
902654012fSReza Sabdar }
912654012fSReza Sabdar }
922654012fSReza Sabdar
932654012fSReza Sabdar if (i) {
942654012fSReza Sabdar for (j = i; j < 3; j++)
952654012fSReza Sabdar arr_3[j] = '\0';
962654012fSReza Sabdar
972654012fSReza Sabdar arr_4[0] = (arr_3[0] & 0xfc) >> 2;
982654012fSReza Sabdar arr_4[1] = ((arr_3[0] & 0x03) << 4) +
992654012fSReza Sabdar ((arr_3[1] & 0xf0) >> 4);
1002654012fSReza Sabdar arr_4[2] = ((arr_3[1] & 0x0f) << 2) +
1012654012fSReza Sabdar ((arr_3[2] & 0xc0) >> 6);
1022654012fSReza Sabdar arr_4[3] = arr_3[2] & 0x3f;
1032654012fSReza Sabdar
1042654012fSReza Sabdar for (j = 0; j < (i + 1); j++)
1052654012fSReza Sabdar ret[ret_cnt++] = b64_data[arr_4[j]];
1062654012fSReza Sabdar
1072654012fSReza Sabdar while (i++ < 3)
1082654012fSReza Sabdar ret[ret_cnt++] = '=';
1092654012fSReza Sabdar }
1102654012fSReza Sabdar
1112654012fSReza Sabdar ret[ret_cnt++] = '\0';
1122654012fSReza Sabdar return (ret);
1132654012fSReza Sabdar }
1142654012fSReza Sabdar
1152654012fSReza Sabdar char *
ndmp_base64_decode(const char * encoded_str)116*8b87c155SJan Kryl ndmp_base64_decode(const char *encoded_str)
1172654012fSReza Sabdar {
1182654012fSReza Sabdar int len = strlen(encoded_str);
1192654012fSReza Sabdar int i = 0, j = 0;
1202654012fSReza Sabdar int en_ind = 0;
1212654012fSReza Sabdar char arr_4[4], arr_3[3];
1222654012fSReza Sabdar int ret_cnt = 0;
1232654012fSReza Sabdar char *ret = malloc(NDMP_DEC_LEN);
1242654012fSReza Sabdar char *p;
1252654012fSReza Sabdar
1262654012fSReza Sabdar if (ret == NULL) {
1272654012fSReza Sabdar ndmp_errno = ENDMP_MEM_ALLOC;
1282654012fSReza Sabdar return (NULL);
1292654012fSReza Sabdar }
1302654012fSReza Sabdar
1312654012fSReza Sabdar while (len-- && (encoded_str[en_ind] != '=') &&
1322654012fSReza Sabdar ndmp_is_base64(encoded_str[en_ind])) {
1332654012fSReza Sabdar arr_4[i++] = encoded_str[en_ind];
1342654012fSReza Sabdar en_ind++;
1352654012fSReza Sabdar if (i == 4) {
1362654012fSReza Sabdar for (i = 0; i < 4; i++) {
137*8b87c155SJan Kryl if ((p = strchr(b64_data, arr_4[i])) == NULL) {
138*8b87c155SJan Kryl free(ret);
1392654012fSReza Sabdar return (NULL);
140*8b87c155SJan Kryl }
1412654012fSReza Sabdar
1422654012fSReza Sabdar arr_4[i] = (int)(p - b64_data);
1432654012fSReza Sabdar }
1442654012fSReza Sabdar
1452654012fSReza Sabdar arr_3[0] = (arr_4[0] << 2) +
1462654012fSReza Sabdar ((arr_4[1] & 0x30) >> 4);
1472654012fSReza Sabdar arr_3[1] = ((arr_4[1] & 0xf) << 4) +
1482654012fSReza Sabdar ((arr_4[2] & 0x3c) >> 2);
1492654012fSReza Sabdar arr_3[2] = ((arr_4[2] & 0x3) << 6) +
1502654012fSReza Sabdar arr_4[3];
1512654012fSReza Sabdar
1522654012fSReza Sabdar for (i = 0; i < 3; i++)
1532654012fSReza Sabdar ret[ret_cnt++] = arr_3[i];
1542654012fSReza Sabdar
1552654012fSReza Sabdar i = 0;
1562654012fSReza Sabdar }
1572654012fSReza Sabdar }
1582654012fSReza Sabdar
1592654012fSReza Sabdar if (i) {
1602654012fSReza Sabdar for (j = i; j < 4; j++)
1612654012fSReza Sabdar arr_4[j] = 0;
1622654012fSReza Sabdar
1632654012fSReza Sabdar for (j = 0; j < 4; j++) {
164*8b87c155SJan Kryl if ((p = strchr(b64_data, arr_4[j])) == NULL) {
165*8b87c155SJan Kryl free(ret);
1662654012fSReza Sabdar return (NULL);
167*8b87c155SJan Kryl }
1682654012fSReza Sabdar
1692654012fSReza Sabdar arr_4[j] = (int)(p - b64_data);
1702654012fSReza Sabdar }
1712654012fSReza Sabdar arr_3[0] = (arr_4[0] << 2) +
1722654012fSReza Sabdar ((arr_4[1] & 0x30) >> 4);
1732654012fSReza Sabdar arr_3[1] = ((arr_4[1] & 0xf) << 4) +
1742654012fSReza Sabdar ((arr_4[2] & 0x3c) >> 2);
1752654012fSReza Sabdar arr_3[2] = ((arr_4[2] & 0x3) << 6) +
1762654012fSReza Sabdar arr_4[3];
1772654012fSReza Sabdar for (j = 0; j < (i - 1); j++)
1782654012fSReza Sabdar ret[ret_cnt++] = arr_3[j];
1792654012fSReza Sabdar }
1802654012fSReza Sabdar
1812654012fSReza Sabdar ret[ret_cnt++] = '\0';
1822654012fSReza Sabdar return (ret);
1832654012fSReza Sabdar }
184