Invalid permissions when calling smugmug.albums.create

dlado · April 7, 2010

Hi All,

I'm having issues when adding albums. It returns me the following XML:

<?xml version="1.0" encoding="utf-8"?>
<rsp stat="fail"><method>smugmug.albums.create</method><err code="34" msg="invalid permissions"/></rsp>

I try to change the authorization parameters of my application in the control panel but it is not allowing me to change.

I've not tested upload images but I assume I'll have the same issue.

I'm using v 1.2.2 of Smugmug api (with oAuth) and I call the API using .NET through REST.

Could anyone assist me on this issue?

Thanks in advance!

Damian Lado

devbobo · April 7, 2010

yes, it means that your OAuth token only has 'Read' access to your account, which is the default.

Read the section 'Obtaining User Authorization in the OAuth documentation.

Let me know if you have any questions.

Cheers,

David

dlado · April 7, 2010

Hi David, thanks for the quick response! I was needing it.

Ok, I follow your indications and I read the link. Now I added a couple of parameters more to the URL that redirects the user for authentication. It looks like:

[html]
http://api.smugmug.com/services/oauth/authorize.mg?oauth_token=1ddbee9fda00d4da698c2835f5aece33&Access=Full&Permissions=Add
[/html]

Now, when I call [html]
http://api.smugmug.com/services/api/rest/1.2.2/?method=smugmug.albums.create&Title=new
[/html]

I get:

[html]<?xml version="1.0" encoding="utf-8"?>
<rsp stat="fail"><method>smugmug.albums.create</method><err code="35" msg="invalid signature"/></rsp>[/html]

The odd thing here is that I can get albums and images without any problem using oAuth and I assume that the signature generation and authorization header will be the same for create, update, upload...???

Should I make the call using POST??? because I'm using GET.

Another question. Let's supose I make the create album and update album work, If I have two methods, one to add an album and the other to update an album...should I have to generate again the authorization token?? (becouse in the Permissions parameter you could select Modify and Add).

Modify allows you to add??

Hope you can help me and I appreciate the quick and kind response.

devbobo · April 7, 2010

Damian,

once you have an authorized app, re-authorizing the app doesn't change the Access/Permissions, go you either have to change the app's Permissions/Access from the Control Panel...or revoke the token and re-authorize.

In regard to Permissions.... Add can Read, and Modify can Add and Read

Let me know how you get on.

Cheers,

David

dlado · April 8, 2010

This is the funny thing.

I've done that before posting but nothing happend. I went to Control Panel/Settings/Authorized Applications

Then I click change, I select Full + Modify in the combos, click Save and after telling me "Changing Application", it remains the old info, nothing happend:

app name: MyApp | access: Public | permissions: Read | [URL="javascript:toggleDIV('editAuthApp_25504','authapp_25504','block');"]change[/URL] | [URL="javascript:toggleDIV('revokeAuthApp_25504','actionsAuthApp_25504','block');"]revoke[/URL]

I don't know why...

Any ideas?

Thanks for yout help!

Damian

dlado · April 8, 2010

News......

I revoke the permission and then execute my app sending Full + Modify and in the control panel shows me that I have Full access and Modify Permisions!

But....... it stills not allowing me to create an album:
[HTML]

<?xml version="1.0" encoding="utf-8"?>
<rsp stat="fail"><method>smugmug.albums.create</method><err code="35" msg="invalid signature"/></rsp>
[/HTML]

The call I'm doing is: string response = _oauth.APIWebRequest("GET", "http://api.smugmug.com/services/api/rest/1.2.2/?method=smugmug.albums.create&Title=new", null);
Keep on trying... let me know if you have any ideas...

devbobo · April 8, 2010

I've just done some testing to make sure it's not a bug...and it works fine for me.

What signature method are you using ? Does the URL that is requested over the wire look correct (including headers if you are using the Authorization header).

What's the nickname for your account, so that I can take a look ?

Cheers,

David

dlado · April 9, 2010

Hi David, thanks for all your support

My user name is schakra.

I'm using oAUth with HMAC-SHA1.

Here is the data:

URL: [html]http://api.smugmug.com/services/api/rest/1.2.2/?method=smugmug.albums.create&Title=new[/html]

Parameters in Signature: [html]method=smugmug.albums.create&oauth_consumer_key=rqEw0bLgIaV4oWYek4G1gudqREfzd6Lo&oauth_nonce=8727979&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1270817974&oauth_token=561ed5cb0c8f2ec2c7a1dde8e2fe5252&oauth_version=1.0&Title=new[/html]

Generated signature: [html]GET&http%3A%2F%2Fapi.smugmug.com%2Fservices%2Fapi%2Frest%2F1.2.2%2F&method%3Dsmugmug.albums.create%26oauth_consumer_key%3DrqEw0bLgIaV4oWYek4G1gudqREfzd6Lo%26oauth_nonce%3D8727979%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1270817974%26oauth_token%3D561ed5cb0c8f2ec2c7a1dde8e2fe5252%26oauth_version%3D1.0%26Title%3Dnew[/html]

Authentication Header: [html]OAuth realm="http://api.smugmug.com/",oauth_consumer_key="rqEw0bLgIaV4oWYek4G1gudqREfzd6Lo",oauth_token="561ed5cb0c8f2ec2c7a1dde8e2fe5252",oauth_signature_method="HMAC-SHA1",oauth_signature="xRHfiF1Y3ks0n8kVzVIW/yZLA3U=",oauth_timestamp="1270817974",oauth_nonce="8727979", oauth_version="1.0"[/html]

I hope all this info will help you to find the issue.

The strange thing is that with methods that get's data is working.

Hope we could solve this.

Thanks in advance!

Damian Lado

devbobo · April 9, 2010

Damian,

I believe that the issue is that Title should appear first in this string as it should be sorted A-Za-z

dlado wrote:

Parameters in Signature: [html]method=smugmug.albums.create&oauth_consumer_key=rqEw0bLgIaV4oWYek4G1gudqREfzd6Lo&oauth_nonce=8727979&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1270817974&oauth_token=561ed5cb0c8f2ec2c7a1dde8e2fe5252&oauth_version=1.0&Title=new[/html]

Did you write your own OAuth code or are you using an existing library ?

Cheers,

David

dlado · April 10, 2010

Hi David,

No, I'm using an existing class but I can modify it because I have the source code. I'll fix that and I'll let you know!

Thanks!

Damian

dlado · April 10, 2010

Hi David! It worked!!!!

Now I'm able to delete, update and add albums.

Thanks very much for your help and support!! I was needing this calls to work and sometime is difficult to finde people that help you until it is solved.

I appreciate your disposition and professionalism.

Damian Lado

devbobo · April 11, 2010

Hey Damian,

Glad you got it working

Cheers mate,

David

sujit1779 · January 1, 2012

Hi,

I didn't get what does it mean by "Title" should be before? I am also getting this errror, I am able to retrieve other details like getTree, etc. I am using "oAuthSig" project to get signature.

Thanks.

devbobo wrote: »

Hey Damian,

Glad you got it working

Cheers mate,

David

masterghi · January 2, 2012

sujit1779 wrote: »

Hi,

I didn't get what does it mean by "Title" should be before? I am also getting this errror, I am able to retrieve other details like getTree, etc. I am using "oAuthSig" project to get signature.

Thanks.

I believe it means that the queyr parameters in the oAuth base string must be sorted lexographically before . This means that all the upper case parameters come first, then lowercase, etc.
Here is the link in the oAuth 1.0 spec that describes this: http://oauth.net/core/1.0/#sig_norm_param

Parameters are sorted by name, using lexicographical byte value ordering. If two or more parameters share the same name, they are sorted by their value.

In C# I am using this comparer to sort the list of KeyValuePair objects that contain the parameters.

            encodedParameters.Sort(new Comparison<KeyValuePair<string, string>>((param1, param2) =>
                {
                    if (param1.Key == param2.Key)
                    {
                        return string.Compare(param1.Value, param2.Value, StringComparison.Ordinal);
                    }
                    else
                    {
                        return string.Compare(param1.Key, param2.Key, StringComparison.Ordinal);
                    }
                }));

Also, make sure that the parameter name and parameter values are both encoded in the same way the oAuth spec mentiones.

--Masterghi

Invalid permissions when calling smugmug.albums.create

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