I would like to use a code to identify users, without asking them for their email address or other sensitive information, that would also possibly follow her when she changes device. Long ago I trustily implemented the following piece of code:
NSString *strApplicationUUID=nil;
+(NSString*) sharedUdid{
if (!strApplicationUUID){
NSString *appName=[[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey];
strApplicationUUID = [SSKeychain passwordForService:appName account:#"incoding"];
if (strApplicationUUID == nil) {
strApplicationUUID=[[NSUserDefaults standardUserDefaults] objectForKey:#"udid"];
if (!strApplicationUUID) strApplicationUUID=[[[UIDevice currentDevice] identifierForVendor] UUIDString];
else strApplicationUUID = [[NSUUID UUID] UUIDString];
[SSKeychain setPassword:strApplicationUUID forService:appName account:#"incoding"];
}
}
return strApplicationUUID;
}
That I unfortunately found producing all but unique identifiers for each user. So I temporarily switched to using the token, notwithstanding its length and the fact it is linked to a single device. Is there some better solution?
I switched to using the CloudKit identifier.
Related
I made a test JWT using something like the following code
String jwt = Jwts.builder()
.setHeaderParam("typ", "jwt")
.setId("myid")
.setIssuer("ExampleIssuer")
.setSubject("JohnDoe")
.setIssuedAt(Date.from(LocalDateTime.now().toInstant(ZoneOffset.ofHours(-4))))
.setExpiration(Date.from(LocalDateTime.now().toInstant(ZoneOffset.ofHours(-4)).plusSeconds(600)))
.claim("perms",perms)
.signWith(SignatureAlgorithm.HS512, "SECRET")
.compact();
"perms" is a custom claim, which contains an ArrayList of Strings (permissions).
So when I receive the JWT back, I use the following code
try{
Jwt<?, ?> claims = Jwts.parser().setSigningKey("SECRET").parse(jwt);
System.out.println(claims.getBody().toString());
} catch (SignatureException e){
//Error
}
And I get something like
{jti=myid, iss=ExampleIssuer, sub=JohnDoe, iat=1495678299, exp=1495678899, perms=[CREATE, VIEW]}
My question is: is this the correct (intended) way to get the claims back? It seems from now I will need to parse the result with a custom method, but I think somehow that is not the intended way.
Thank you.`
I found a solution, not sure if the intended one, but it works. I need to use
Claims claims = new DefaultClaims();
try{
claims = Jwts.parser().setSigningKey("SECRET").parseClaimsJws(jwt).getBody();
} catch (SignatureException e){
//Signature error
}
I can use Map methods on claims, but also the built-in methods to recover the individual claims:
String jti = claims.getId();
String iss = claims.getIssuer();
String sub = claims.getSubject();
String iat = claims.getIssuedAt().toString();
String exp = claims.getExpiration().toString();
#SuppressWarnings("unchecked")
ArrayList<String> perms = (ArrayList<String>) claims.get("perms");
I think I can suppress the warning on the unchecked casting because since I created the custom claim with the same value class, I know what to expect on it. Now the claims in the token are parsed correctly into variables I can work with.
I've created a number of users in Parse. There're Facebook users and non-Facebook user. For each Facebook user I've saved an extra column of "facebookID".
Now I'd like to get all the ParseUsers that are Facebook Users. So I applied a Task to query the users with "facebookID" in them.
var Task = ParseUser.Query.WhereExists("facebookID").FindAsync().ContinueWith(t=>{
if (t.IsFaulted || t.IsCanceled) {
Debug.Log ("t.Exception=" + t.Exception);
//cannot load friendlist
return;
}
else{
fbFriends = t.Result;
foreach(var result in fbFriends){
string id = (string)result["facebookID"];
//facebookUserIDList is a List<string>
facebookUserIDList.Add(id);
}
return;
}
});
The above code works perfectly. However, I'd like to get more data from each Facebook User, for example, the current_coins that the user has. So I change the foreach loop to:
foreach(var result in fbFriends){
string id = (string)result["facebookID"];
int coins = (int)result["current_coins"];
//facebookUserIDList is a List<string>
facebookUserIDList.Add(id);
}
I've changed the facebookUserIDList into a List<Dictionary<string,object>> instead of a List<string> in order to save the other data as well. But the foreach loop does not run at all. Does it mean I can only get the facebookID from it because I specified WhereExists("facebookID") in FindAsync()? Can anybody explain it to me please?
Thank you very much in advance.
it should contain all Parse primitive data type(such as Boolean, Number, String, Date...) for each Object. but not Pointers nor Relation.
for Pointers, you can explicitly include them in the result using the "Include" method
for any ParseRelation you have to requery them
Is there any way to parametise the Datasource for the 'source' field in the Template Builder?
We have a multisite setup. As part of this it would save a lot of time and irritation if we could point our Droptrees and Treelists point at the appropriate locations rather than common parents.
For instance:
Content
--Site1
--Data
--Site2
--Data
Instead of having to point our site at the root Content folder I want to point it at the individual data folders, so I want to do something like:
DataSource=/sitecore/content/$sitename/Data
I can't find any articles on this. Is it something that's possible?
Not by default, but you can use this technique to code your datasources:
http://newguid.net/sitecore/2013/coded-field-datasources-in-sitecore/
You could possibly use relative paths if it fits with the rest of your site structure. It could be as simple as:
./Data
But if the fields are on random items all over the tree, that might not be helpul.
Otherwise try looking at:
How to use sitecore query in datasource location? (dynamic datasouce)
You might want to look at using a Querable Datasource Location and plugging into the getRenderingDatasource pipeline.
It's really going to depend on your use cases. The thing I like about this solution is there is no need to create a whole bunch of controls which effectively do he same thing as the default Sitecore ones, and you don't have to individually code up each datasource you require - just set the query you need to get the data. You can also just set the datasource query in the __standard values for the templates.
This is very similar to Holger's suggestion, I just think this code is neater :)
Since Sitecore 7 requires VS 2012 and our company isn't going to upgrade any time soon I was forced to find a Sitecore 6 solution to this.
Drawing on this article and this one I came up with this solution.
public class SCWTreeList : TreeList
{
protected override void OnLoad(EventArgs e)
{
if (!String.IsNullOrEmpty(Source))
this.Source = SourceQuery.Resolve(SContext.ContentDatabase.Items[ItemID], Source);
base.OnLoad(e);
}
}
This creates a custom TreeList control and passes it's Source field through to a class to handle it. All that class needs to do is resolve anything you have in the Source field into a sitecore query path which can then be reassigned to the source field. This will then go on to be handled by Sitecore's own query engine.
So for our multi-site solution it enabled paths such as this:
{A588F1CE-3BB7-46FA-AFF1-3918E8925E09}/$sitename
To resolve to paths such as this:
/sitecore/medialibrary/Product Images/Site2
Our controls will then only show items for the correct site.
This is the method that handles resolving the GUIDs and tokens:
public static string Resolve(Item item, string query)
{
// Resolve tokens
if (query.Contains("$"))
{
MatchCollection matches = Regex.Matches(query, "\\$[a-z]+");
foreach (Match match in matches)
query = query.Replace(match.Value, ResolveToken(item, match.Value));
}
// Resolve GUIDs.
MatchCollection guidMatches = Regex.Matches(query, "^{[a-zA-Z0-9-]+}");
foreach (Match match in guidMatches)
{
Guid guid = Guid.Parse(match.Value);
Item queryItem = SContext.ContentDatabase.GetItem(new ID(guid));
if (item != null)
query = query.Replace(match.Value, queryItem.Paths.FullPath);
}
return query;
}
Token handling below, as you can see it requires that any item using the $siteref token is inside an Site Folder item that we created. That allows us to use a field which contains the name that all of our multi-site content folders must follow - Site Reference. As long at that naming convention is obeyed it allows us to reference folders within the media library or any other shared content within Sitecore.
static string ResolveToken(Item root, string token)
{
switch (token)
{
case "$siteref":
string sRef = string.Empty;
Item siteFolder = root.Axes.GetAncestors().First(x => x.TemplateID.Guid == TemplateKeys.CMS.SiteFolder);
if (siteFolder != null)
sRef = siteFolder.Fields["Site Reference"].Value;
return sRef;
}
throw new Exception("Token '" + token + "' is not recognised. Please disable wishful thinking and try again.");
}
So far this works for TreeLists, DropTrees and DropLists. It would be nice to get it working with DropLinks but this method does not seem to work.
This feels like scratching the surface, I'm sure there's a lot more you could do with this approach.
I want to display large photos in my Facebook app's feed view immediately. Is it possible to get the large photo src URL from a stream/feed using one API call? The photo id is returned in the stream/feed and one can of course then supply this photo id in an additional FQL or graph API call to retrieve all the information about that photo. However, is there a way using multi-query or batch calls to get a larger photo src url using one API roundtrip?
I haven't tried this with stream/feed photos, but the generally accepted way of doing this is:
http://graph.facebook.com/{ID of object}/picture
If you want the "large" version, you would do:
http://graph.facebook.com/{ID of object}/picture?type=large
I'm not 100% sure if this would work for an actual photo (instead of a user profile picture or page profile pic), but I have a hunch it will - the only caveat is that you obviously must have a logged in user that is authorized to view the photo (unless it's public).
If anybody is looking to this and type large is not enough, I found other solutions.
Type large is kind of small anyway (close to 200px). You can get larger image by adding i.e. ?width=1000 or ?height=1000. Facebook will return picture closest to given dimension and preserve aspect ratio. When passing both dimenstions like ?width=1000&height=1000, facebook will cut image to given dimensions (in this case square).
Use Facebook UserId (Oject ID) to get the picture.
https://graph.facebook.com/173xxxx8635/picture?type=large&redirect=false
which returns JSON data with picture URL.
{
"data": {
"is_silhouette": false,
"url": "https://fbcdn-profile-a.akamaihd.net/xxx/xyz/1cc066a2cae3f301d"
}
}
A good trick with the new api is to get the pic_cover field from the event table and to process it according to the size you want to use
I found when I was having this trouble that it turned out to be the picture I was downloading rather than the size I was setting it.
If for example I downloaded all my photos with a request of
[FBRequestConnection startWithGraphPath:#"/me/photos?fields=created_time,name,picture&type=tagged" parameters:nil HTTPMethod:#"GET" completionHandler:^(FBRequestConnection * connection, id result, NSError *error) {
NSDictionary * userData = (NSDictionary *)result;
NSMutableArray * array = [[NSMutableArray alloc] initWithArray:userData[#"data"]];
for (NSDictionary * dict in eventsToAdd) {
UIImage * image = dict[#"picture"]
}
}];
I am using the dictionary key search "picture" as I want the picture.
This though will get me a lower quality picture than if I searched for "source" in this search:
[FBRequestConnection startWithGraphPath:#"/me/photos?fields=created_time,name,source&type=tagged" parameters:nil HTTPMethod:#"GET" completionHandler:^(FBRequestConnection * connection, id result, NSError *error) {
NSDictionary * userData = (NSDictionary *)result;
NSMutableArray * array = [[NSMutableArray alloc] initWithArray:userData[#"data"]];
for (NSDictionary * dict in eventsToAdd) {
UIImage * image = dict[#"source"]
}
}];
If you go on the Facebook API explorer and search for photos and then click on the picture and source jpg links you can see the difference in size and quality.
Since changing this method I have managed to get rid of using the type parameters as it doesn't seem to make a different.
Note: I am using iPhone and not iPad or a larger screen so I don't know how this affects bigger screens.
The answer by #streetlogics works fine but only on pictures that have {object_id}.
http://graph.facebook.com/{object_id}/picture
But I also wanted large pictures for the feed's shared links, which sometimes don't have {object_id}. I finally realized that the {picture} thumbnail URL contains the encoded URL for the original site's large image:
https://external.xx.fbcdn.net/safe_image.php?d=AQBe9UvGd0vPbAHP&w=130&h=130&url=http%3A%2F%2Fskift.com%2Fwp-content%2Fuploads%2F2015%2F12%2Fpollution.jpg&cfs=1
--> contains -->
http://skift.com/wp-content/uploads/2015/12/pollution.jpg
So I made a loop that checks for {object_id} and if not present then extracts the URL from {picture}:
if(isset($post['object_id'])) {
echo "http://graph.facebook.com/".$post['object_id']."/picture";
}
elseif(isset($post['picture'])) {
echo urldecode(preg_replace('/&cfs.*/', '', preg_replace('/.*url=/', '', $post['picture'])));
}
else {
echo "no_large_image";
}
I'm having a problem with my picker in one of my apps. I have an NSDictionary obtained from a property list that contains a bunch of keys, which in turn contain a bunch of strings. I have two components, each one should have the same list of strings within. I also have a slider that I want to use to allow the user to change keys. So when the slider's value goes from 0 to 1 the key at index 1 in the dictionary should load its contents into the pickerview's components.
It's working as far as loading the new contents into the picker based on the slider. I've been using the slider's tag as the variable to dictate which contents get loaded. The problem is that after loading a new list of items the program crashes, I'm thinking that the number of rows needed isn't getting update or something but I'm just not experienced enough with UIPickerView to isolate the problem myself without spending more hours than I've already used trying to figure this out myself.
Here are my delegate/data methods for the picker:
#pragma mark -
#pragma mark Picker Delegate/Data Methods
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
//aryNames is an NSArray instance variable that contains the values for the components of the picker
if (component == 0)
return [self.aryNames count];
return [self.aryNames count];
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row
forComponent:(NSInteger)component
{
//I think this is where my problem is
//I'm using a string to select the object
// at the index of the slider's location to
// fill up the instance variable with new data.
//Anyway, it works fine if I have two different arrays hardcoded
//but I'd really like to have this load dynamically because
//there are a lot of keys and this way I could add and remove keys without
//worrying about changing code
NSString *selectedType = [self.aryKeys objectAtIndex:slideUnitTypes.tag];
NSArray *newNames = [dictAllNames objectForKey:selectedType];
self.aryNames = newNames;
return [aryNames objectAtIndex:row];
}
//I'm pretty sure that the method below is not the problem
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:
(NSInteger)component
{
if (component == 0)
{
[firstValueHeading setText:[aryNames objectAtIndex:row]];
}
else
{
[secondValueHeading setText:[aryNames objectAtIndex:row]];
}
}
If it wasn't descriptive enough or you need to see more of my code please tell me. This problem has been a real bugger in an otherwise smooth project. Thanks.
I am still fairly new to this myself, but in Troy Brant's book (chapter 9) he does this. You should grab the book from the library/bookstore and review the source code at http://troybrant.net/iphonebook/chapter9/Ruralfork-done.zip
It should help.
i've actually solved this long since. here is the code for that delegate if it helps:
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
NSUInteger index = slideUnitTypes.value;
NSString *placeString = [self.aryKeys objectAtIndex:index];
NSArray *returnThisArray = [dictAllNames objectForKey:placeString];
return [returnThisArray objectAtIndex:row];
}
if anyone out there needs to see any of my other delegates just comment on this answer and hopefully SO should send me an email.