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//
// LinkBackServer.m
// LinkBack
//
// Created by Charles Jolley on Tue Jun 15 2004.
// Copyright (c) 2004, Nisus Software, Inc.
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// Neither the name of the Nisus Software, Inc. nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#import "LinkBackServer.h"
#import "LinkBack.h"
NSString* MakeLinkBackServerName(NSString* bundleIdentifier, NSString* name)
{
return [bundleIdentifier stringByAppendingFormat: @":%@",name] ;
}
NSMutableDictionary* LinkBackServers = nil ;
@implementation LinkBackServer
+ (void)initialize
{
static BOOL inited = NO ;
if (inited) return ;
[super initialize] ;
inited = YES ;
if (!LinkBackServers) LinkBackServers = [[NSMutableDictionary alloc] init];
}
+ (LinkBackServer*)LinkBackServerWithName:(NSString*)aName
{
return [LinkBackServers objectForKey: aName] ;
}
+ (BOOL)publishServerWithName:(NSString*)aName delegate:(id<LinkBackServerDelegate>)del
{
LinkBackServer* serv = [[LinkBackServer alloc] initWithName: aName delegate: del] ;
BOOL ret = [serv publish] ; // retains if successful
[serv release] ;
return ret ;
}
BOOL LinkBackServerIsSupported(NSString* name, id supportedServers)
{
BOOL ret = NO ;
int idx ;
NSString* curServer = supportedServers ;
// NOTE: supportedServers may be nil, an NSArray, or NSString.
if (supportedServers) {
if ([supportedServers isKindOfClass: [NSArray class]]) {
idx = [supportedServers count] ;
while((NO==ret) && (--idx >= 0)) {
curServer = [supportedServers objectAtIndex: idx] ;
ret = [curServer isEqualToString: name] ;
}
} else ret = [curServer isEqualToString: name] ;
}
return ret ;
}
NSString* FindLinkBackServer(NSString* bundleIdentifier, NSString* serverName, NSString* dir, int level)
{
NSString* ret = nil ;
NSFileManager* fm = [NSFileManager defaultManager] ;
NSArray* contents = [fm directoryContentsAtPath: dir] ;
int idx ;
NSLog(@"searching for %@ in folder: %@", serverName, dir) ;
// working info
NSString* cpath ;
NSBundle* cbundle ;
NSString* cbundleIdentifier ;
id supportedServers ;
// resolve any symlinks, expand tildes.
dir = [dir stringByStandardizingPath] ;
// find all .app bundles in the directory and test them.
idx = (contents) ? [contents count] : 0 ;
while((nil==ret) && (--idx >= 0)) {
cpath = [contents objectAtIndex: idx] ;
if ([[cpath pathExtension] isEqualToString: @"app"]) {
cpath = [dir stringByAppendingPathComponent: cpath] ;
cbundle = [NSBundle bundleWithPath: cpath] ;
cbundleIdentifier = [cbundle bundleIdentifier] ;
if ([cbundleIdentifier isEqualToString: bundleIdentifier]) {
supportedServers = [[cbundle infoDictionary] objectForKey: @"LinkBackServer"] ;
ret= (LinkBackServerIsSupported(serverName, supportedServers)) ? cpath : nil ;
}
}
}
// if the app was not found, descend into non-app dirs. only descend 4 levels to avoid taking forever.
if ((nil==ret) && (level<4)) {
idx = (contents) ? [contents count] : 0 ;
while((nil==ret) && (--idx >= 0)) {
BOOL isdir ;
cpath = [contents objectAtIndex: idx] ;
[fm fileExistsAtPath: cpath isDirectory: &isdir] ;
if (isdir && (![[cpath pathExtension] isEqualToString: @"app"])) {
cpath = [dir stringByAppendingPathComponent: cpath] ;
ret = FindLinkBackServer(bundleIdentifier, serverName, cpath, level+1) ;
}
}
}
return ret ;
}
void LinkBackRunAppNotFoundPanel(NSString* appName, NSURL* url)
{
int result ;
// strings for panel
NSBundle* b = [NSBundle bundleForClass: [LinkBack class]] ;
NSString* title ;
NSString* msg ;
NSString* ok ;
NSString* urlstr ;
title = NSLocalizedStringFromTableInBundle(@"_AppNotFoundTitle", @"Localized", b, @"app not found title") ;
ok = NSLocalizedStringFromTableInBundle(@"_OK", @"Localized", b, @"ok") ;
msg = (url) ? NSLocalizedStringFromTableInBundle(@"_AppNotFoundMessageWithURL", @"Localized", b, @"app not found msg") : NSLocalizedStringFromTableInBundle(@"_AppNotFoundMessageNoURL", @"Localized", b, @"app not found msg") ;
urlstr = (url) ? NSLocalizedStringFromTableInBundle(@"_GetApplication", @"Localized", b, @"Get application") : nil ;
title = [NSString stringWithFormat: title, appName] ;
result = NSRunCriticalAlertPanel(title, msg, ok, urlstr, nil) ;
if (NSAlertAlternateReturn == result) {
[[NSWorkspace sharedWorkspace] openURL: url] ;
}
}
+ (LinkBackServer*)LinkBackServerWithName:(NSString*)aName inApplication:(NSString*)bundleIdentifier launchIfNeeded:(BOOL)flag fallbackURL:(NSURL*)url appName:(NSString*)appName ;
{
BOOL connect = YES ;
NSString* serverName = MakeLinkBackServerName(bundleIdentifier, aName) ;
id ret = nil ;
NSTimeInterval tryMark ;
// Try to connect
ret = [NSConnection rootProxyForConnectionWithRegisteredName: serverName host: nil] ;
// if launchIfNeeded, and the connection was not available, try to launch.
if((!ret) && (flag)) {
NSString* appPath ;
id linkBackServers ;
// first, try to find the app with the bundle identifier
appPath = [[NSWorkspace sharedWorkspace] absolutePathForAppBundleWithIdentifier: bundleIdentifier] ;
linkBackServers = [[[NSBundle bundleWithPath: appPath] infoDictionary] objectForKey: @"LinkBackServer"] ;
appPath = (LinkBackServerIsSupported(aName, linkBackServers)) ? appPath : nil ;
// if the found app is not supported, we will need to search for the app ourselves.
if (nil==appPath) appPath = FindLinkBackServer(bundleIdentifier, aName, @"/Applications",0);
if (nil==appPath) appPath = FindLinkBackServer(bundleIdentifier, aName, @"~/Applications",0);
if (nil==appPath) appPath = FindLinkBackServer(bundleIdentifier, aName, @"/Network/Applications",0);
// if app path has been found, launch the app.
if (appPath) {
[[NSWorkspace sharedWorkspace] launchApplication: appName] ;
} else {
LinkBackRunAppNotFoundPanel(appName, url) ;
connect = NO ;
}
}
// if needed, try to connect.
// retry connection for a while if we did not succeed at first. This gives the app time to launch.
if (connect && (nil==ret)) {
tryMark = [NSDate timeIntervalSinceReferenceDate] ;
do {
ret = [NSConnection rootProxyForConnectionWithRegisteredName: serverName host: nil] ;
} while ((!ret) && (([NSDate timeIntervalSinceReferenceDate]-tryMark)<10)) ;
}
// setup protocol and return
if (ret) [ret setProtocolForProxy: @protocol(LinkBackServer)] ;
return ret ;
}
- (id)initWithName:(NSString*)aName delegate:(id<LinkBackServerDelegate>)aDel
{
if (self = [super init]) {
name = [aName copy] ;
delegate = aDel ;
listener = nil ;
}
return self ;
}
- (void)dealloc
{
if (listener) [self retract] ;
[name release] ;
[super dealloc] ;
}
- (BOOL)publish
{
NSString* serverName = MakeLinkBackServerName([[NSBundle mainBundle] bundleIdentifier], name) ;
BOOL ret = YES ;
// create listener and connect
NSPort* port = [NSPort port] ;
listener = [NSConnection connectionWithReceivePort: port sendPort:port] ;
[listener setRootObject: self] ;
ret = [listener registerName: serverName] ;
// if successful, retain connection and add self to list of servers.
if (ret) {
[listener retain] ;
[LinkBackServers setObject: self forKey: name] ;
} else listener = nil ; // listener will dealloc on its own.
return ret ;
}
- (void)retract
{
if (listener) {
[listener invalidate] ;
[listener release] ;
listener = nil ;
}
[LinkBackServers removeObjectForKey: name] ;
}
- (LinkBack*)initiateLinkBackFromClient:(LinkBack*)clientLinkBack
{
LinkBack* ret = [[LinkBack alloc] initServerWithClient: clientLinkBack delegate: delegate] ;
// NOTE: we do not release because LinkBack will release itself when it the link closes. (caj)
return ret ;
}
@end
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