1 /* ***** BEGIN LICENSE BLOCK *****
2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 * The contents of this file are subject to the Mozilla Public License Version
5 * 1.1 (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 * http://www.mozilla.org/MPL/
9 * Software distributed under the License is distributed on an "AS IS" basis,
10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 * for the specific language governing rights and limitations under the
14 * The Original Code is the Network Security Services.
16 * The Initial Developer of the Original Code is Nelson B Bolyard
17 * Portions created by the Initial Developer are Copyright (C) 2007
18 * the Initial Developer. All Rights Reserved.
22 * Alternatively, the contents of this file may be used under the terms of
23 * either the GNU General Public License Version 2 or later (the "GPL"), or
24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
25 * in which case the provisions of the GPL or the LGPL are applicable instead
26 * of those above. If you wish to allow use of your version of this file only
27 * under the terms of either the GPL or the LGPL, and not to allow others to
28 * use your version of this file under the terms of the MPL, indicate your
29 * decision by deleting the provisions above and replace them with the notice
30 * and other provisions required by the GPL or the LGPL. If you do not delete
31 * the provisions above, a recipient may use your version of this file under
32 * the terms of any one of the MPL, the GPL or the LGPL.
34 * ***** END LICENSE BLOCK ***** */
41 /* if to->data is not NULL, and to->len is large enough to hold the result,
42 * then the resultant OID will be copyed into to->data, and to->len will be
43 * changed to show the actual OID length.
44 * Otherwise, memory for the OID will be allocated (from the caller's
45 * PLArenaPool, if pool is non-NULL) and to->data will receive the address
46 * of the allocated data, and to->len will receive the OID length.
47 * The original value of to->data is not freed when a new buffer is allocated.
49 * The input string may begin with "OID." and this still be ignored.
50 * The length of the input string is given in len. If len == 0, then
51 * len will be computed as strlen(from), meaning it must be NUL terminated.
52 * It is an error if from == NULL, or if *from == '\0'.
56 SEC_StringToOID(PLArenaPool *pool, SECItem *to, const char *from, PRUint32 len)
58 PRUint32 decimal_numbers = 0;
59 PRUint32 result_bytes = 0;
63 static const PRUint32 max_decimal = (0xffffffff / 10);
64 static const char OIDstring[] = {"OID."};
67 PORT_SetError(SEC_ERROR_INVALID_ARGS);
71 len = PL_strlen(from);
73 if (len >= 4 && !PL_strncasecmp(from, OIDstring, 4)) {
74 from += 4; /* skip leading "OID." if present */
79 PORT_SetError(SEC_ERROR_BAD_DATA);
84 while (len > 0 && isdigit(*from)) {
85 PRUint32 addend = (*from++ - '0');
87 if (decimal > max_decimal) /* overflow */
89 decimal = (decimal * 10) + addend;
90 if (decimal < addend) /* overflow */
93 if (len != 0 && *from != '.') {
96 if (decimal_numbers == 0) {
99 result[0] = decimal * 40;
101 } else if (decimal_numbers == 1) {
104 result[0] += decimal;
106 /* encode the decimal number, */
108 PRUint32 num_bytes = 0;
109 PRUint32 tmp = decimal;
115 ++num_bytes; /* use one byte for a zero value */
116 if (num_bytes + result_bytes > sizeof result)
119 rp = result + result_bytes - 1;
120 rp[tmp] = (PRUint8)(decimal & 0x7f);
123 rp[tmp] = (PRUint8)(decimal | 0x80);
126 result_bytes += num_bytes;
129 if (len > 0) { /* skip trailing '.' */
134 /* now result contains result_bytes of data */
135 if (to->data && to->len >= result_bytes) {
136 PORT_Memcpy(to->data, result, to->len = result_bytes);
139 SECItem result_item = {siBuffer, NULL, 0 };
140 result_item.data = result;
141 result_item.len = result_bytes;
142 rv = SECITEM_CopyItem(pool, to, &result_item);