[MacRuby-devel] retrieving password from keychain
kjvarga at gmail.com
Mon Apr 20 16:45:31 PDT 2009
Thanks for the reply Laurent. Yes I did generate a BridgeSupport file
and included it in my build. I did try to call the method and pass in
a pointer for the item reference (using Pointer.new_for_type('@')) but
the object that was assigned after the call was some weird NSCFType
object which, when I googled it, basically translates to "you're
screwed" :) I do get some malloc warnings when I include the
bridgesupport file so I was a bit uneasy about the whole thing.
I'll try writing my own Objective-C class. I'm looking forward to
getting past this issue.
On Tue, Apr 21, 2009 at 6:44 AM, Laurent Sansonetti
<lsansonetti at apple.com> wrote:
> Hi Karl,
> On Apr 19, 2009, at 8:17 PM, Karl Varga wrote:
>> Hi there,
>> I am having a strange problem that other people don't seem to be
>> having because I can't find any references to in google searches. I
>> am using MacRuby 0.4 installed from the binary available on the
>> macruby binary releases page (MacRuby version 0.4 (ruby 1.9.1)
>> [universal-darwin9.5, x86_64])
>> I have an application which stores username/passwords in the keychain.
>> I can add items to the keychain (so I can call
>> SecKeychainAddGenericPassword() fine and therefore I think my setup
>> must be OK), but I cannot retrieve them. When I call:
>> status, *data = SecKeychainFindGenericPassword(
>> nil, service.length, service, username.length, username)
>> I get an error:
>> `SecKeychainFindGenericPassword': wrong number of arguments (5 for 8)
>> The method signature is this:
>> OSStatus SecKeychainFindGenericPassword (
>> CFTypeRef keychainOrArray,
>> UInt32 serviceNameLength,
>> const char *serviceName,
>> UInt32 accountNameLength,
>> const char *accountName,
>> UInt32 *passwordLength,
>> void **passwordData,
>> SecKeychainItemRef *itemRef
>> All the examples I've read suggest that this method in macruby should
>> only take 5 args and return the status, password length, password
>> string and item reference (the last 3 extracted from *data) instead of
>> passing in pointers (which I don't know how to do BTW).
>> What gives? Anyone have any idea or had the same problem?
> I am surprised you were able to call SecKeychainFindGenericPassword() from
> MacRuby, did you generate a BridgeSupport file for the Security framework?
> As for your question, MacRuby currently doesn't support the RubyCocoa way of
> dealing with returned-by-reference arguments (which is what you're trying to
> do I think), so you must allocate Pointer objects instead. In the case of
> this call it may be painful, so I would recommend to wrap this in an
> Objective-C class in the interim and use that class from MacRuby.
kjvarga at gmail.com
Cell: +61 (0)4 2075 1356
More information about the MacRuby-devel