static unsafe string GetUsernameFromKeychainItemRef(IntPtr itemRef)
{
int[] formatConstants = { (int)CssmDbAttributeFormat.String };
int[] attributeTags = { (int)SecItemAttr.Account };
fixed(int *tags = attributeTags, formats = formatConstants)
{
var attributeInfo = new SecKeychainAttributeInfo {
Count = 1,
Tag = tags,
Format = formats
};
SecKeychainAttributeList *attributeList = null;
SecItemClass itemClass = 0;
try {
SecStatusCode status = SecKeychainItemCopyAttributesAndData(itemRef, &attributeInfo, ref itemClass, &attributeList, IntPtr.Zero, IntPtr.Zero);
if (status == SecStatusCode.ItemNotFound)
{
throw new Exception("Could not add internet password to keychain: " + status.GetStatusDescription());
}
if (status != SecStatusCode.Success)
{
throw new Exception("Could not find internet username and password: " + status.GetStatusDescription());
}
var userNameAttr = (SecKeychainAttribute *)attributeList->Attrs;
if (userNameAttr->Length == 0)
{
return(null);
}
return(Marshal.PtrToStringAuto(userNameAttr->Data, (int)userNameAttr->Length));
} finally {
SecKeychainItemFreeAttributesAndData(attributeList, IntPtr.Zero);
}
}
}
static unsafe string GetUsernameFromKeychainItemRef(IntPtr itemRef)
{
int[] formatConstants = { (int)CssmDbAttributeFormat.String };
int[] attributeTags = { (int)SecItemAttr.Account };
fixed(int *tags = attributeTags, formats = formatConstants)
{
var attributeInfo = new SecKeychainAttributeInfo {
Count = 1,
Tag = tags,
Format = formats
};
SecKeychainAttributeList *attributeList;
IntPtr outData = IntPtr.Zero;
SecItemClass itemClass = 0;
uint length = 0;
OSStatus status = SecKeychainItemCopyAttributesAndData(itemRef, &attributeInfo, ref itemClass, &attributeList, ref length, ref outData);
if (status == OSStatus.ItemNotFound)
{
throw new Exception("Could not add internet password to keychain: " + GetError(status));
}
if (status != OSStatus.Ok)
{
throw new Exception("Could not find internet username and password: " + GetError(status));
}
var userNameAttr = (SecKeychainAttribute *)attributeList->Attrs;
if (userNameAttr->Length == 0)
{
return(null);
}
return(Marshal.PtrToStringAuto(userNameAttr->Data, (int)userNameAttr->Length));
}
}
public static unsafe bool ContainsCertificate(X509Certificate2 certificate)
{
// Note: we don't have to use an alias attribute, it's just that it might be faster to use it (fewer certificates we have to compare raw data for)
byte[] alias = Encoding.UTF8.GetBytes(GetCertificateCommonName(certificate));
IntPtr searchRef, itemRef;
bool found = false;
byte[] certData;
OSStatus status;
fixed(byte *aliasPtr = alias)
{
SecKeychainAttribute *attrs = stackalloc SecKeychainAttribute [1];
int n = 0;
if (alias != null)
{
attrs[n++] = new SecKeychainAttribute(SecItemAttr.Alias, (uint)alias.Length, (IntPtr)aliasPtr);
}
SecKeychainAttributeList attrList = new SecKeychainAttributeList(n, (IntPtr)attrs);
status = SecKeychainSearchCreateFromAttributes(CurrentKeychain, SecItemClass.Certificate, &attrList, out searchRef);
if (status != OSStatus.Ok)
{
throw new Exception("Could not enumerate certificates from the keychain. Error:\n" + GetError(status));
}
// we cache certificate.RawData to avoid unneccessary duplication (X509Certificate2.RawData clones the byte[] each time)
certData = certificate.RawData;
while (!found && (status = SecKeychainSearchCopyNext(searchRef, out itemRef)) == OSStatus.Ok)
{
SecItemClass itemClass = 0;
IntPtr data = IntPtr.Zero;
uint length = 0;
status = SecKeychainItemCopyContent(itemRef, ref itemClass, IntPtr.Zero, ref length, ref data);
if (status == OSStatus.Ok)
{
if (certData.Length == (int)length)
{
byte[] rawData = new byte[(int)length];
Marshal.Copy(data, rawData, 0, (int)length);
found = true;
for (int i = 0; i < rawData.Length; i++)
{
if (rawData[i] != certData[i])
{
found = false;
break;
}
}
}
SecKeychainItemFreeContent(IntPtr.Zero, data);
}
CFRelease(itemRef);
}
CFRelease(searchRef);
}
return(found);
}
static extern OSStatus SecKeychainItemCopyContent(IntPtr itemRef, ref SecItemClass itemClass, IntPtr attrList, ref uint length, ref IntPtr data);
static extern unsafe OSStatus SecKeychainItemCopyAttributesAndData(IntPtr itemRef, SecKeychainAttributeInfo *info, ref SecItemClass itemClass,
SecKeychainAttributeList **attrList, ref uint length, ref IntPtr outData);
static extern unsafe OSStatus SecKeychainItemCreateFromContent(SecItemClass itemClass, SecKeychainAttributeList *attrList,
uint passwordLength, byte[] password, IntPtr keychain,
IntPtr initialAccess, ref IntPtr itemRef);
static extern unsafe OSStatus SecKeychainSearchCreateFromAttributes(IntPtr keychainOrArray, SecItemClass itemClass, SecKeychainAttributeList *attrList, out IntPtr searchRef);
static unsafe extern OSStatus SecKeychainSearchCreateFromAttributes(IntPtr keychainOrArray, SecItemClass itemClass, SecKeychainAttributeList *attrList, out IntPtr searchRef);
static unsafe extern OSStatus SecKeychainItemCreateFromContent(SecItemClass itemClass, SecKeychainAttributeList *attrList, uint passwordLength, byte[] password, IntPtr keychain, IntPtr initialAccess, ref IntPtr itemRef);
static extern OSStatus SecKeychainItemCopyContent(IntPtr itemRef, ref SecItemClass itemClass, IntPtr attrList, ref uint length, ref IntPtr data);
static extern unsafe OSStatus SecKeychainItemCopyAttributesAndData (IntPtr itemRef, SecKeychainAttributeInfo* info, ref SecItemClass itemClass, SecKeychainAttributeList** attrList, ref uint length, ref IntPtr outData);
static extern unsafe SecStatusCode SecKeychainItemCopyAttributesAndData(IntPtr itemRef, SecKeychainAttributeInfo *info, ref SecItemClass itemClass,
SecKeychainAttributeList **attrList, IntPtr lengthRef, IntPtr outDataRef);
