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adium / Source / AIURLHandlerPlugin.m

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//
//  AIURLHandlerPlugin.m
//  Adium
//
//  Created by Zachary West on 2009-04-03.
//

#import "AIURLHandlerPlugin.h"
#import "AIURLHandlerAdvancedPreferences.h"

#import "AINewContactWindowController.h"
#import "XtrasInstaller.h"

#import <AIUtilities/AIURLAdditions.h>
#import <AIUtilities/AIStringAdditions.h>
#import <AIUtilities/AIWindowAdditions.h>

#import <Adium/AIContactControllerProtocol.h>
#import <Adium/AIAccountControllerProtocol.h>
#import <Adium/AIInterfaceControllerProtocol.h>
#import <Adium/AIChatControllerProtocol.h>
#import <Adium/AIContentMessage.h>
#import <Adium/AIService.h>
#import <Adium/AIAccount.h>

@interface AIURLHandlerPlugin()
- (void)checkHandledSchemes;

- (void)handleURL:(NSNotification *)notification;

- (void)_openChatToContactWithName:(NSString *)name onService:(NSString *)serviceIdentifier withMessage:(NSString *)body;
- (void)_openAIMGroupChat:(NSString *)roomname onExchange:(NSInteger)exchange;
- (void)_openXMPPGroupChat:(NSString *)name onServer:(NSString *)server withPassword:(NSString *)inPassword;
- (void)_openIRCGroupChat:(NSString *)name onServer:(NSString *)server withPassword:(NSString *)password;
@end

/*!
 * @class AIURLHandlerPlugin
 *
 * The URL handler plugin handles URL events sent to us.
 *
 * For example, it will convert aim://goim?sn=fuark to open a chat window with
 * the user "fuark" on the first available AIM account.
 *
 * This plugin is also responsible for managing the default application settings
 * for the schemes we support, and enforcing if necessary our ownership.
 */
@implementation AIURLHandlerPlugin
/*!
 * @brief Install plugin
 *
 * This sets up our advanced preferences view and checks our defaults.
 */
- (void)installPlugin
{
        preferences = [[AIURLHandlerAdvancedPreferences preferencePaneForPlugin:self] retain];
        
        [self checkHandledSchemes];
        
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                                                         selector:@selector(handleURL:)
                                                                                                 name:AIURLHandleNotification
                                                                                           object:nil];
}

/*!
 * @brief Unisntall
 */
- (void)uninstallPlugin
{
        [[NSNotificationCenter defaultCenter] removeObserver:self];
        
        [preferences release];
}

#pragma mark Scheme enforcement
/*!
 * @brief Set Adium as the default for all handled schemes
 *
 * For all service schemes (and their aliases), set ourself as their default bundle ID.
 */
- (void)setAdiumAsDefault
{
        for (NSString *scheme in self.uniqueSchemes) {
                [self setDefaultForScheme:scheme toBundleID:ADIUM_BUNDLE_ID];
        }       
}

/*!
 * @brief Check our handled schemes
 *
 * If this is the first launch, or the user has "enforce Adium as default" set, set ourself
 * as the default for all available service schemes.
 *
 * Always set ourself as the default for our helper schemes (such as adiumxtra).
 */
- (void)checkHandledSchemes
{
        if ((![[adium.preferenceController preferenceForKey:PREF_KEY_SET_DEFAULT_FIRST_TIME
                                                                                                  group:GROUP_URL_HANDLING] boolValue]) ||
                ([[adium.preferenceController preferenceForKey:PREF_KEY_ENFORCE_DEFAULT
                                                                                                 group:GROUP_URL_HANDLING] boolValue])) {
                // Either this is our first launch, or we're set to enforce our defaults.
                // Set ourself as the default for everything.
                
                [self setAdiumAsDefault];
        }
        
        for (NSString *scheme in self.helperSchemes) {
                [self setDefaultForScheme:scheme toBundleID:ADIUM_BUNDLE_ID];
        }
}

#pragma mark Schemes
/*!
 * @brief Get a service ID from a scheme
 *
 * Asking for the service ID of an unknown scheme will return nil.
 *
 * @param scheme One of our supported schemes
 * @returns The serviceID for the service which uses the scheme given
 */
- (NSString *)serviceIDForScheme:(NSString *)scheme
{
        static NSDictionary     *schemeToServiceDict = nil;
        if (!schemeToServiceDict) {
                schemeToServiceDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                                                           @"AIM",     @"aim",
                                                           @"Yahoo!",  @"ymsgr",
                                                           @"Yahoo!",  @"yahoo",
                                                           @"Jabber",  @"xmpp",
                                                           @"Jabber",  @"jabber",
                                                           @"GTalk",   @"gtalk",
                                                           @"MSN",     @"msn",
                                                           @"IRC",         @"irc",
                                                           @"MySpace", @"msim",
                                                           nil];
        }
        
        return [schemeToServiceDict objectForKey:scheme];
}

/*!
 * @brief All of the schemes similar to a given scheme
 *
 * Several services (such as Yahoo and Jabber) have several scheme
 * aliases which are possible schemes for them. Instead of having multiple
 * entries each, we simply use a reference one and apply to all aliases.
 *
 * @param scheme A reference scheme (see -uniqueSchemes)
 * @returns An NSArray of all schemes similar to the given one.
 */
- (NSArray *)allSchemesLikeScheme:(NSString *)scheme
{
        if ([scheme isEqualToString:@"ymsgr"]) {
                return [NSArray arrayWithObjects:@"yahoo", @"ymsgr", nil];
        } else if ([scheme isEqualToString:@"xmpp"]) {
                return [NSArray arrayWithObjects:@"xmpp", @"jabber", @"gtalk", nil];
        } else {
                return [NSArray arrayWithObject:scheme];
        }
}

/*!
 * @brief Unique schemes we support
 *
 * @returns An NSArray of all of the schemes we support.
 */
- (NSArray *)uniqueSchemes
{
        return [NSArray arrayWithObjects:@"aim", @"irc", @"xmpp", @"msn", @"msim", @"ymsgr", nil];
}

/*!
 * @brief Helper schemes
 *
 * Helper schemes are schemes which we should always be registered as the default application
 * for. This includes things like the adiumxtra:// installer, and twitterreply:// for the Twitter
 * service.
 *
 * @returns An NSArray of all of the helper schemes we support.
 */
- (NSArray *)helperSchemes
{
        return [NSArray arrayWithObjects:@"twitterreply", @"adiumxtra", nil];
}

#pragma mark Default Bundle
/*!
 * @brief Set an application as the default for a scheme
 *
 * @param inScheme The scheme to set the default for
 * @param bundleID The bundle ID of an application to set as the default for the given scheme
 */
- (void)setDefaultForScheme:(NSString *)inScheme toBundleID:(NSString *)bundleID
{
        for (NSString *scheme in [self allSchemesLikeScheme:inScheme]) {
                LSSetDefaultHandlerForURLScheme((CFStringRef)scheme, (CFStringRef)bundleID);
        }
}

/*!
 * @brief Default application bundle ID for a scheme
 *
 * @param scheme The scheme to determine the default application for
 * @returns An NSString bundle ID for the default application of a scheme
 */
- (NSString *)defaultApplicationBundleIDForScheme:(NSString *)scheme
{
        return [[(NSString *)LSCopyDefaultHandlerForURLScheme((CFStringRef)scheme) autorelease] lowercaseString];
}

#pragma mark URL Handling
/*!
 * @brief Handle a URL notification
 *
 * @param notification An NSNotification whose -object is the NSString of a URL.
 */
- (void)handleURL:(NSNotification *)notification
{
        NSString *urlString = notification.object;
        NSURL *url = [NSURL URLWithString:urlString];
        
        if (!url)
                return;
        
        NSString        *scheme, *newScheme;
        NSString        *serviceID;
        
        //make sure we have the // in ://, as it simplifies later processing.
        if (![[url resourceSpecifier] hasPrefix:@"//"]) {
                urlString = [NSString stringWithFormat:@"%@://%@", [url scheme], [url resourceSpecifier]];
                url = [NSURL URLWithString:urlString];
        }
        
        scheme = [url scheme];
        
        //map schemes to common aliases (like jabber: for xmpp:).
        static NSDictionary *schemeMappingDict = nil;
        if (!schemeMappingDict) {
                schemeMappingDict = [[NSDictionary alloc] initWithObjectsAndKeys:
                                                         @"ymsgr", @"yahoo",
                                                         @"xmpp", @"jabber",
                                                         nil];
        }
        
        newScheme = [schemeMappingDict objectForKey:scheme];
        if (newScheme) {
                scheme = newScheme;
                urlString = [NSString stringWithFormat:@"%@:%@", scheme, [url resourceSpecifier]];
                url = [NSURL URLWithString:urlString];
        }

        if ((serviceID = [self serviceIDForScheme:scheme])) {
                NSString *host = [url host];
                NSString *query = [url query];
                
                if ([scheme isEqualToString:@"aim"]) {
                        if ([host caseInsensitiveCompare:@"goim"] == NSOrderedSame) {
                                // aim://goim?screenname=tekjew
                                NSString        *name = [[[url queryArgumentForKey:@"screenname"] stringByDecodingURLEscapes] compactedString];
                                
                                if (name) {
                                        [self _openChatToContactWithName:name
                                                                                   onService:serviceID 
                                                                                 withMessage:[[url queryArgumentForKey:@"message"] stringByDecodingURLEscapes]];
                                }
                                
                        } else if ([host caseInsensitiveCompare:@"addbuddy"] == NSOrderedSame) {
                                // aim://addbuddy?screenname=tekjew
                                // aim://addbuddy?listofscreennames=screen+name1,screen+name+2&groupname=buddies
                                NSString        *name = [[[url queryArgumentForKey:@"screenname"] stringByDecodingURLEscapes] compactedString];
                                AIService       *service = [adium.accountController firstServiceWithServiceID:serviceID];
                                
                                if (name) {
                                        [adium.contactController requestAddContactWithUID:name
                                         service:service
                                         account:nil];
                                        
                                } else {
                                        NSString                *listOfNames = [url queryArgumentForKey:@"listofscreennames"];
                                        NSArray                 *names = [listOfNames componentsSeparatedByString:@","];
                                        
                                        for (name in names) {
                                                NSString        *decodedName = [[name stringByDecodingURLEscapes] compactedString];
                                                [adium.contactController requestAddContactWithUID:decodedName
                                                 service:service
                                                 account:nil];
                                        }
                                }
                        } else if ([host caseInsensitiveCompare:@"gochat"]  == NSOrderedSame) {
                                // aim://gochat?RoomName=AdiumRocks
                                NSString        *roomname = [[url queryArgumentForKey:@"roomname"] stringByDecodingURLEscapes];
                                NSString        *exchangeString = [url queryArgumentForKey:@"exchange"];
                                if (roomname) {
                                        NSInteger exchange = 0;
                                        if (exchangeString) {
                                                exchange = [exchangeString integerValue];       
                                        }
                                        
                                        [self _openAIMGroupChat:roomname onExchange:(exchange ? exchange : 4)];
                                }
                                
                        } else if ([url queryArgumentForKey:@"openChatToScreenName"]) {
                                // aim://openChatToScreenname?tekjew  [?]
                                NSString *name = [[[url queryArgumentForKey:@"openChatToScreenname"] stringByDecodingURLEscapes] compactedString];
                                
                                if (name) {
                                        [self _openChatToContactWithName:name
                                                                                   onService:serviceID
                                                                                 withMessage:nil];
                                }
                                
                        } else if ([host caseInsensitiveCompare:@"BuddyIcon"] == NSOrderedSame) {
                                //aim:BuddyIcon?src=http://www.nbc.com//Heroes/images/wallpapers/heroes-downloads-icon-single-48x48-07.gif
                                NSString *urlString = [url queryArgumentForKey:@"src"];
                                if ([urlString length]) {
                                        NSURL *urlToDownload = [[NSURL alloc] initWithString:urlString];
                                        NSData *imageData = (urlToDownload ? [NSData dataWithContentsOfURL:urlToDownload] : nil);
                                        [urlToDownload release];
                                        
                                        //Should prompt for where to apply the icon?
                                        if (imageData &&
                                                [[[NSImage alloc] initWithData:imageData] autorelease]) {
                                                //If we successfully got image data, and that data makes a valid NSImage, set it as our global buddy icon
                                                [adium.preferenceController setPreference:imageData
                                                 forKey:KEY_USER_ICON
                                                 group:GROUP_ACCOUNT_STATUS];
                                        }
                                }
                        }
                } else if ([scheme isEqualToString:@"ymsgr"]) {
                        if ([host caseInsensitiveCompare:@"sendim"] == NSOrderedSame) {
                                // ymsgr://sendim?tekjew
                                NSString *name = [[[url query] stringByDecodingURLEscapes] compactedString];
                                
                                if (name) {
                                        [self _openChatToContactWithName:name
                                                                                   onService:serviceID
                                                                                 withMessage:nil];
                                }
                                
                        } else if ([host caseInsensitiveCompare:@"im"] == NSOrderedSame) {
                                // ymsgr://im?to=tekjew
                                NSString *name = [[[url queryArgumentForKey:@"to"] stringByDecodingURLEscapes] compactedString];
                                
                                if (name) {
                                        [self _openChatToContactWithName:name
                                                                                   onService:serviceID
                                                                                 withMessage:nil];
                                }
                        }
                } else if ([scheme isEqualToString:@"gtalk"]) {
                        if ([url queryArgumentForKey:@"openChatToScreenName"]) {
                                // gtalk:chat?jid=foo@gmail.com&from_jid=bar@gmail.com
                                NSString *name = [[[url queryArgumentForKey:@"jid"] stringByDecodingURLEscapes] compactedString];
                                
                                if (name) {
                                        [self _openChatToContactWithName:name
                                                                                   onService:serviceID
                                                                                 withMessage:nil];
                                }
                        }
                } else if ([scheme isEqualToString:@"xmpp"]) {
                        if ([query rangeOfString:@"message"].location == 0) {
                                //xmpp:johndoe@jabber.org?message;subject=Subject;body=Body
                                NSString *msg = [[url queryArgumentForKey:@"body"] stringByDecodingURLEscapes];
                                
                                [self _openChatToContactWithName:[NSString stringWithFormat:@"%@@%@", [url user], [url host]]
                                                                           onService:serviceID
                                                                         withMessage:msg];
                        } else if ([query rangeOfString:@"roster"].location == 0
                                           || [query rangeOfString:@"subscribe"].location == 0) {
                                //xmpp:johndoe@jabber.org?roster;name=John%20Doe;group=Friends
                                //xmpp:johndoe@jabber.org?subscribe
                                
                                //Group specification and name specification is currently ignored,
                                //due to limitations in the AINewContactWindowController API.
                                
                                AIService *jabberService;
                                
                                jabberService = [adium.accountController firstServiceWithServiceID:@"Jabber"];
                                
                                [AINewContactWindowController promptForNewContactOnWindow:nil
                                                                                                                                         name:[NSString stringWithFormat:@"%@@%@", [url user], [url host]]
                                                                                                                                  service:jabberService
                                                                                                                                  account:nil];
                        } else if ([query rangeOfString:@"remove"].location == 0
                                           || [query rangeOfString:@"unsubscribe"].location == 0) {
                                // xmpp:johndoe@jabber.org?remove
                                // xmpp:johndoe@jabber.org?unsubscribe
                                
                        } else if ([query rangeOfString:@"join"].location == 0) {
                                NSString *password = [[url queryArgumentForKey:@"password"] stringByDecodingURLEscapes];
                                
                                [self _openXMPPGroupChat:[url user]
                                                                onServer:[url host]
                                                        withPassword:password];
                                
                                //TODO: 
                        }
                } else if ([scheme caseInsensitiveCompare:@"irc"] == NSOrderedSame) {
                        // irc://server/channel?password
                        NSString *channelName = [url fragment];
                        
                        if (!channelName.length && [url.path.lastPathComponent isEqualToString:@"/"]) {
                                channelName = @"#";
                        } else if (!channelName.length) {
                                channelName = url.path.lastPathComponent;
                        }
                        
                        if (![channelName hasPrefix:@"#"] && ![channelName hasPrefix:@"&"]) {
                                channelName = [@"#" stringByAppendingString:channelName];
                        }
                        
                        channelName = [channelName stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
                        
                        [self _openIRCGroupChat:channelName onServer:[url host] withPassword:[url query]];
                } else if ([scheme caseInsensitiveCompare:@"msim"] == NSOrderedSame) {
                        NSString *contactName = [url queryArgumentForKey:@"cID"];
                        
                        if (contactName.length) {
                                if ([host isEqualToString:@"addContact"]) {
                                        [AINewContactWindowController promptForNewContactOnWindow:nil
                                                                                                                                                 name:contactName
                                                                                                                                          service:[adium.accountController firstServiceWithServiceID:serviceID]
                                                                                                                                          account:nil];
                                } else if ([host isEqualToString:@"sendIM"]) {
                                        [self _openChatToContactWithName:contactName
                                                                                   onService:serviceID
                                                                                 withMessage:nil];
                                }
                        }
                } else {
                        //Default to opening the host as a name.
                        NSString        *user = [url user];
                        NSString        *host = [url host];
                        NSString        *name;
                        if (user && [user length]) {
                                //jabber://tekjew@jabber.org
                                //msn://jdoe@hotmail.com
                                name = [NSString stringWithFormat:@"%@@%@",[url user],[url host]];
                        } else {
                                //aim://tekjew
                                name = host;
                        }
                        
                        [self _openChatToContactWithName:[name compactedString]
                                                                   onService:serviceID
                                                                 withMessage:nil];
                }
                
        } else if ([scheme isEqualToString:@"adiumxtra"]) {
                //Installs an adium extra
                // adiumxtra://www.adiumxtras.com/path/to/xtra.zip
                
                [[XtrasInstaller installer] installXtraAtURL:url];
        }
}

#pragma mark Chat openers

- (void)_openChatToContactWithName:(NSString *)UID onService:(NSString *)serviceID withMessage:(NSString *)message
{
        AIListContact           *contact = [adium.contactController preferredContactWithUID:UID
                                                                        andServiceID:serviceID 
                                                                        forSendingContentType:CONTENT_MESSAGE_TYPE];
        if (contact) {
                //Open the chat and set it as active
                [adium.interfaceController setActiveChat:[adium.chatController openChatWithContact:contact
                                                                                                  onPreferredAccount:YES]];

                //Insert the message text as if the user had typed it after opening the chat
                NSResponder *responder = [[NSApp keyWindow] earliestResponderOfClass:[NSTextView class]];
                if (message && [responder isKindOfClass:[NSTextView class]] && [(NSTextView *)responder isEditable]) {
                        [responder insertText:message];
                }
                
        } else {
                NSBeep();
        }
}

- (void)_openIRCGroupChat:(NSString *)name onServer:(NSString *)server withPassword:(NSString *)password
{
        AIAccount *ircAccount = nil;
        
        for (AIAccount *account in adium.accountController.accounts) {
                if ([account.service.serviceClass isEqualToString:@"IRC"] && [account.host isEqualToString:server]) {
                        ircAccount = account;
                        break;
                }
        }
        
        if (!ircAccount) {
                NSRunAlertPanel(AILocalizedString(@"Unable to Join Channel", nil),
                                                AILocalizedString(@"Unable to join the channel %@, no account exists for server %@.", nil),
                                                AILocalizedStringFromTable(@"OK", @"Buttons", "Verb 'OK' on a button"),
                                                nil,
                                                nil,
                                                name,
                                                server);
        } else if (name) {
                [adium.chatController chatWithName:name
                 identifier:nil
                 onAccount:ircAccount
                 chatCreationInfo:[NSDictionary dictionaryWithObjectsAndKeys:
                                                   name, @"channel",
                                                   password, @"password", /* may be nil, so should be last */
                                                   nil]];
        } else {
                NSBeep();
        }
}

- (void)_openXMPPGroupChat:(NSString *)name onServer:(NSString *)server withPassword:(NSString *)password
{
        AIAccount               *account = nil;
        
        //Find an XMPP-compatible online account which can create group chats
        for (account in adium.accountController.accounts) {
                if (account.online &&
                        [account.service.serviceClass isEqualToString:@"Jabber"] &&
                        [account.service canCreateGroupChats]) {
                        break;
                }
        }
        
        if (name && account) {
                [adium.chatController chatWithName:[NSString stringWithFormat:@"%@@%@", name, server]
                                                                identifier:nil
                                                                 onAccount:account
                                                  chatCreationInfo:[NSDictionary dictionaryWithObjectsAndKeys:
                                                                                        name, @"room",
                                                                                        server, @"server",
                                                                                        account.displayName, @"handle",
                                                                                        password, @"password", /* may be nil, so should be last */
                                                                                        nil]];
        } else {
                NSBeep();
        }
}

- (void)_openAIMGroupChat:(NSString *)roomname onExchange:(NSInteger)exchange
{
        AIAccount               *account;
        
        //Find an AIM-compatible online account which can create group chats
        for (account in adium.accountController.accounts) {
                if (account.online &&
                        [account.service.serviceClass isEqualToString:@"AIM-compatible"] &&
                        [account.service canCreateGroupChats]) {
                        break;
                }
        }
        
        if (roomname && account) {
                [adium.chatController chatWithName:roomname
                 identifier:nil
                 onAccount:account
                 chatCreationInfo:[NSDictionary dictionaryWithObjectsAndKeys:
                                                   roomname, @"room",
                                                   [NSNumber numberWithInteger:exchange], @"exchange",
                                                   nil]];
        } else {
                NSBeep();
        }
}

@end