+++ /dev/null
-/*
- * Copyright (c) 2000-2004,2006,2011-2012,2014 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-//
-// cssmdata.cpp -- Manager different CssmData types
-//
-#include <security_cdsa_utilities/cssmdata.h>
-#include <security_utilities/utilities.h>
-#include <cstring>
-#include <algorithm>
-
-
-namespace Security {
-
-
-//
-// Comparing raw CSSM_DATA things
-//
-bool operator == (const CSSM_DATA &d1, const CSSM_DATA &d2)
-{
- if (&d1 == &d2)
- return true; // identical
- if (d1.Length != d2.Length)
- return false; // can't be
- if (d1.Data == d2.Data)
- return true; // points to same data
- return !memcmp(d1.Data, d2.Data, d1.Length);
-}
-
-
-//
-// CssmData out of line members
-//
-string CssmData::toString() const
-{
- return data() ?
- string(reinterpret_cast<const char *>(data()), length())
- :
- string();
-}
-
-
-//
-// Conversion from/to hex digits.
-// This could be separate functions, or Rep templates, but we just hang
-// it onto generic CssmData.
-//
-string CssmData::toHex() const
-{
- static const char digits[] = "0123456789abcdef";
- string result;
- unsigned char *p = Data;
- for (uint32 n = 0; n < length(); n++) {
- result.push_back(digits[p[n] >> 4]);
- result.push_back(digits[p[n] & 0xf]);
- }
- return result;
-}
-
-static unsigned char hexValue(char c)
-{
- static const char digits[] = "0123456789abcdef";
- if (const char *p = strchr(digits, tolower(c)))
- return p - digits;
- else
- return 0;
-}
-
-void CssmData::fromHex(const char *hexDigits)
-{
- size_t bytes = strlen(hexDigits) / 2; // (discards malformed odd end)
- length(bytes); // (will assert if we try to grow it)
- for (size_t n = 0; n < bytes; n++) {
- Data[n] = hexValue(hexDigits[2*n]) << 4 | hexValue(hexDigits[2*n+1]);
- }
-}
-
-
-//
-// Conversion from/to OID strings.
-// These are not strict; invalid inputs are not necessarily flagged as errors.
-//
-static unsigned long getOid(const CssmData &data, unsigned int &pos)
-{
- unsigned long q = 0;
- do {
- q = q * 128 + (data.byte(pos) & ~0x80);
- } while (pos < data.length() && data.byte(pos++) & 0x80);
- return q;
-}
-
-string CssmData::toOid() const
-{
- if (length() == 0)
- return "";
-
- unsigned int pos = 0;
-
- // first byte is composite (q1,q2)
- char buffer[10];
- unsigned long oid1 = getOid(*this, pos);
- unsigned long q1 = min(oid1 / 40, 2ul);
- snprintf(buffer, sizeof(buffer), "%lu.%lu", q1, oid1 - q1 * 40);
- string s = buffer;
-
- // now for the rest
- while (pos < length()) {
- char buffer[20];
- snprintf(buffer, sizeof(buffer), ".%lu", getOid(*this, pos));
- s += buffer;
- }
- return s;
-}
-
-static void putOid(CssmOwnedData &data, unsigned long id)
-{
- unsigned char buffer[sizeof(unsigned long) * 2]; // * (8/7) + 1, conservative
- unsigned char *p = buffer + sizeof(buffer);
- do {
- *--p = 0x80 | (id & 0x7F); // last 7 bits, high bit set
- } while ((id >>= 7) > 0);
- buffer[sizeof(buffer) - 1] &= ~0x80; // clear last high bit (end of number)
- data.append(p, buffer + sizeof(buffer) - p); // append generated byte string
-}
-
-//
-// Convert OID string (1.2.3...) into CssmOid form.
-// Allocates the data, replacing current contents.
-// Will not process oid elements out of unsigned long range.
-//
-void CssmOwnedData::fromOid(const char *oid)
-{
- this->length(0); // make empty
-
- // first two elements get combined in weird&wacky ways
- unsigned long q1 = strtoul(oid, (char **)&oid, 10);
- if (*oid++ != '.')
- return;
- unsigned long q2 = strtoul(oid, (char **)&oid, 10);
- putOid(*this, 40 * q1 + q2);
- while (oid[0] == '.') {
- oid++;
- putOid(*this, strtoul(oid, (char **)&oid, 10));
- }
-}
-
-
-//
-// Managed data objects
-//
-CssmManagedData::~CssmManagedData()
-{ }
-
-
-//
-// CssmOwnedData
-//
-void CssmOwnedData::set(CssmManagedData &source)
-{
- if (source.length() == 0) { // source is empty
- reset(); // so just clear old data
- } else if (allocator == source.allocator) { // compatible allocators
- if (referent.data() == source.data()) { // same data *and* we own it?!
- assert(this == &source); // this better *be* me!
- } else { // different data
- reset(); // give up our old data
- referent = source.release(); // take over source's data
- }
- } else { // different allocators
- copy(source); // make a copy with our allocator
- source.reset(); // release source's data
- }
-}
-
-
-//
-// CssmAutoData
-//
-CssmData CssmAutoData::release()
-{
- CssmData result = mData;
- mData.clear();
- return result;
-}
-
-void CssmAutoData::reset()
-{
- allocator.free(mData);
- mData.clear();
-}
-
-
-//
-// CssmRemoteData
-//
-CssmData CssmRemoteData::release()
-{
- iOwnTheData = false;
- return referent;
-}
-
-void CssmRemoteData::reset()
-{
- if (iOwnTheData)
- allocator.free(referent);
- referent.clear();
-}
-
-
-//
-// Date stuff
-//
-CssmDateData::CssmDateData(const CSSM_DATE &date)
-: CssmData(buffer, sizeof(buffer))
-{
- memcpy(buffer, date.Year, 4);
- memcpy(buffer + 4, date.Month, 2);
- memcpy(buffer + 6, date.Day, 2);
-}
-
-
-CssmData& CssmOwnedData::get() const throw()
-{
- return referent;
-}
-
-} // end namespace Security
projects / apple / security.git / blobdiff