skype_messaging_carbon2.c - skype4pidgin - Skype API Plugin for Pidgin/libpurple/Adium

Source path: svn/ trunk/ skype_messaging_carbon2.c

‹r544

r629

/*
 * Skype plugin for libpurple/Pidgin/Adium
 * Written by: Eion Robb <eionrobb@gmail.com>
 *
 * This plugin uses the Skype API to show your contacts in libpurple, and send/receive
 * chat messages.
 * It requires the Skype program to be running.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */



#include <Carbon/Carbon.h>
#include <CoreFoundation/CoreFoundation.h>


typedef struct SkypeDelegate
{
	// Required member
	CFStringRef clientApplicationName;
	
	// Optional members, can be NULL
	void (*SkypeNotificationReceived)(CFStringRef aNotificationString);
	void (*SkypeAttachResponse)(unsigned int aAttachResponseCode);			// 0 - failed, 1 - success
	void (*SkypeBecameAvailable)(CFPropertyListRef aNotification);
	void (*SkypeBecameUnavailable)(CFPropertyListRef aNotification);
} SkypeDelegate;

static SkypeDelegate *delegate = NULL;
static int isavailable = 0;
static int client_id = 0;

char *
CFStringToCString(CFStringRef input)
{
	if (input == NULL)
		return NULL;
	int strlen = CFStringGetMaximumSizeForEncoding(CFStringGetLength(input), kCFStringEncodingUTF8);
	char *output = NewPtr(strlen+1);
	CFStringGetCString(input, output, strlen+1, kCFStringEncodingUTF8);
	return output;
}

int
CFNumberToCInt(CFNumberRef input)
{
	if (input == NULL)
		return 0;
	int output;
	CFNumberGetValue(input, kCFNumberIntType, &output);
	return output;
}

void
availabilityUpdateCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	CFNumberRef number = (CFNumberRef)CFDictionaryGetValue(userInfo, CFSTR("SKYPE_API_AVAILABILITY")); 
	isavailable = CFNumberToCInt(number);
}

void
debugCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	int i = 0;
	
	printf("Debug callback: %s\n", CFStringToCString(name));
	if (!userInfo)
		return;
	
	CFIndex count = CFDictionaryGetCount(userInfo);
	const void *keys[count];
	const void *values[count];
	CFDictionaryGetKeysAndValues(userInfo, keys, values);
	for(i = 0; i < count; i++)
	{
		printf("For i=%d, key: %s\n", i,
					CFStringToCString((CFStringRef)keys[i]));
	}
}


void
apiNotificationCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	CFNumberRef number = (CFNumberRef) CFDictionaryGetValue(userInfo, CFSTR("SKYPE_API_CLIENT_ID"));
	int client_number = CFNumberToCInt(number);
	if (client_number != 999 && (!client_id || client_id != client_number))
	{
		return;
	}
	CFStringRef string = (CFStringRef) CFDictionaryGetValue(userInfo, CFSTR("SKYPE_API_NOTIFICATION_STRING"));
	if (string && delegate && delegate->SkypeNotificationReceived)
	{
		delegate->SkypeNotificationReceived(string);
	}
}


void
attachResponseCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	CFNumberRef responseNumber = (CFNumberRef)CFDictionaryGetValue(userInfo, CFSTR("SKYPE_API_ATTACH_RESPONSE"));
	int response = CFNumberToCInt(responseNumber);
	client_id = response;
	if (delegate && delegate->SkypeAttachResponse)
	{
		delegate->SkypeAttachResponse(response?1:0);
	}
}


void
skypeQuitCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	if (delegate && delegate->SkypeBecameAvailable)
		delegate->SkypeBecameUnavailable(NULL);
}


void
skypeAvailableCallback(
	CFNotificationCenterRef center,
	void *observer,
	CFStringRef name,
	const void *object,
	CFDictionaryRef userInfo)
{
	if (delegate && delegate->SkypeBecameAvailable)
		delegate->SkypeBecameAvailable(NULL);
}


// STANDARD SKYPE.H BITS:
void RemoveSkypeDelegate(void);

void
SetSkypeDelegate(SkypeDelegate *aDelegate)
{
	if (!aDelegate->clientApplicationName)
	{
		printf("Deletegate requires application name\n");
		delegate = NULL;
		return;
	}
	
	if (delegate)
	{
		RemoveSkypeDelegate();
	}
	
	delegate = aDelegate;
	
	CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();
	
	CFNotificationCenterAddObserver(
		center,
		delegate->clientApplicationName,
		apiNotificationCallback,
		CFSTR("SKSkypeAPINotification"),
		NULL,
		CFNotificationSuspensionBehaviorDeliverImmediately);

	CFNotificationCenterAddObserver(
		center,
		delegate->clientApplicationName,
		skypeQuitCallback,
		CFSTR("SKSkypeWillQuit"),
		NULL,
		CFNotificationSuspensionBehaviorDeliverImmediately);

	CFNotificationCenterAddObserver(
		center,
		delegate->clientApplicationName,
		skypeAvailableCallback,
		CFSTR("SKSkypeBecameAvailable"),
		NULL,
		CFNotificationSuspensionBehaviorDeliverImmediately);

	CFNotificationCenterAddObserver(
		center,
		delegate->clientApplicationName,
		availabilityUpdateCallback,
		CFSTR("SKAvailabilityUpdate"),
		NULL,
		CFNotificationSuspensionBehaviorDeliverImmediately);

	CFNotificationCenterAddObserver(
		center,
		delegate->clientApplicationName,
		attachResponseCallback,
		CFSTR("SKSkypeAttachResponse"),
		NULL,
		CFNotificationSuspensionBehaviorDeliverImmediately);
}

SkypeDelegate *
GetSkypeDelegate(void)
{
	return delegate;
}

void
RemoveSkypeDelegate(void)
{
	if (delegate && delegate->clientApplicationName)
	{
		CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();
			
		CFNotificationCenterRemoveObserver(
			center,
			delegate->clientApplicationName,
			CFSTR("SKSkypeAPINotification"),
			NULL);

		CFNotificationCenterRemoveObserver(
			center,
			delegate->clientApplicationName,
			CFSTR("SKSkypeWillQuit"),
			NULL);

		CFNotificationCenterRemoveObserver(
			center,
			delegate->clientApplicationName,
			CFSTR("SKSkypeBecameAvailable"),
			NULL);

		CFNotificationCenterRemoveObserver(
			center,
			delegate->clientApplicationName,
			CFSTR("SKAvailabilityUpdate"),
			NULL);

		CFNotificationCenterRemoveObserver(
			center,
			delegate->clientApplicationName,
			CFSTR("SKSkypeAttachResponse"),
			NULL);
	}
	delegate = NULL;
}

int
IsSkypeAvailable(void)
{
	//is skype available?
	isavailable = 0;
	CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();

	CFNotificationCenterPostNotification(
		center,
		CFSTR("SKSkypeAPIAvailabilityRequest"),
		NULL,
		NULL,
		TRUE);
	
	//Should only take 1 second or less to reply
	RunCurrentEventLoop(1);
	int avail = isavailable;
	isavailable = 0;
	return avail;
}

int
IsSkypeRunning(void)
{
	OSStatus status = noErr;
	ProcessSerialNumber psn = {kNoProcess, kNoProcess};
	unsigned int procNameLength = 32;
	unsigned char procName[procNameLength];
	unsigned int i = 0;
	ProcessInfoRec info;
	info.processInfoLength = sizeof(ProcessInfoRec);
	info.processName = procName;
#if __LP64__
	info.processAppRef = NULL;
#else
	info.processAppSpec = NULL;
#endif
	pid_t pid = 0;
	
	while(status == noErr)
	{
		for(i = 0; i < procNameLength; i++)
			procName[i] = '\0';
		
		status = GetNextProcess(&psn);
		if (status == noErr)
		{
			if (GetProcessInformation(&psn, &info) == noErr)
			{
				//for some reason first character is poisioned
				if (g_str_equal((char *)&procName[1], "Skype"))
				{
					if (GetProcessPID(&psn, &pid) == noErr)
					{
						return (int)pid;
					}
				}
			}
		}
	}
	return 0;
}

void
ConnectToSkype(void)
{
	if (!delegate || !delegate->clientApplicationName)
	{
		printf("Error: Delegate not set\n");
		return;
	}
	
	if (!IsSkypeAvailable())
	{
		printf("Error: Skype not available\n");
	}

	CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();
			
	//do the connect
	CFNotificationCenterPostNotification(
		center,
		CFSTR("SKSkypeAPIAttachRequest"),
		delegate->clientApplicationName,
		NULL,
		TRUE);
}

void SendSkypeCommand(CFStringRef command)
{
	if (delegate == NULL)
	{
		printf("Can't send message, no delegate set\n");
		return;
	}
	if (command == NULL)
		return;
	if (!client_id)
	{
		printf("Can't send message, not connected\n");
		return;
	}

	CFRetain(command);

	CFNumberRef id_number = CFNumberCreate(NULL, kCFNumberIntType, &client_id);
	CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();
	const void *keys[] = {(void *)CFSTR("SKYPE_API_COMMAND"), (void *)CFSTR("SKYPE_API_CLIENT_ID")};
	const void *values[] = {command, id_number};
	CFDictionaryRef userInfo = CFDictionaryCreate(NULL, keys, values, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);	
	
	//send message
	CFNotificationCenterPostNotification(
		center,
		CFSTR("SKSkypeAPICommand"),
		NULL,
		userInfo,
		TRUE);
	
	CFRelease(command);
	CFRelease(id_number);
	CFRelease(userInfo);
}

void DisconnectFromSkype(void)
{
	CFNotificationCenterRef center = CFNotificationCenterGetDistributedCenter();
		
	if (client_id)
	{
		CFNumberRef id_number = CFNumberCreate(NULL, kCFNumberIntType, &client_id);
		const void *keys[] = {(void *)CFSTR("SKYPE_API_CLIENT_ID")};
		const void *values[] = {id_number};
		CFDictionaryRef userInfo = CFDictionaryCreate(NULL, keys, values, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);	
	
		//disconnect
		CFNotificationCenterPostNotification(
			center,
			CFSTR("SKSkypeAPIDetachRequest"),
			NULL,
			userInfo,
			TRUE);
			
		client_id = 0;
	}
}

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Change log

r613 by eionrobb on Aug 22, 2011 Diff

Fix for the plugin not connecting to Skype
on OSX.  Big thanks to beau.croteau for
narrowing down the problem to CFRunLoop :)

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Older revisions

r544 by eionrobb on Sep 17, 2009 Diff

Fix for x86_64 OSX builds

r511 by eionrobb on Apr 28, 2009 Diff

Added GPL header to all files.  Using
GPLv3

r395 by eionrobb on Jul 20, 2008 Diff

Use g_str_equal instead of strcmp for
consistency and ease-of-read

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