Summer Coding 2010 proposal - web cam support implementation in libyahoo2

About you

Summer Coding 2010 student application –Satyajit Sarangi

About your project

1. The name of the project is implementation of web cam support in libyahoo2 which is broken due to changes in protocol.
2. Yes , the project does come from an idea on the summer coding 2010 page . https://fedoraproject.org/wiki/Summer_Coding_2010_ideas_-_Libyahoo2
3. The project would deal in implementing the web cam support in libyahoo2 , while the libyahoo2 complies to YMSG16 . This project would help all the messengers that are based on libyahoo2 or the ones that are going to be developed on libyahoo2 to get a wholesome nature when the web cam chat mode would be enabled. This project would require a thorough understanding of the protocols like UDP , SIP , and how they have been implemented in the yahoo server. Thus the libyahoo2 code has to be understood first , which includes the code for web cam , even though its not working , which would help us to understand how the yahoo server might work . The technology used would include Socket programming in C , understanding all the RFC’s for the various protocols , analyzing protocol dumps taken from client-server communication using wireshark or tcpdump . Further , this package when completed should be provided with a better documentation , thus easing future usage and understanding , and also would be pushed into the fedora repository.
4. • June 1st to June 10th - Understand current functionality of libyahoo2 and its current webcam code, read the RFC’s for the protocols and polish the socket programming skills .
   • June 10th to June 14th - Analyse protocol dumps using the official libyahoo2 messenger . This I have given more time as it would take some time to understand how the interaction with the Yahoo server is taking place , and already knowing the protocols well in advance , would help us to understand the dumps quick enough to move into the coding session .
   • June 14th to June 21 – Implementing the module of switching on the web cam and being able to take feeds (frames ) from it and transmit it using the UDP protocol .
   • June 21 to June 28- Implementation of the previous module , through libyahoo2 , keeping in mind the interaction with the yahoo server should not be broken.
   • June 28 th to July 5 th Implementing the module of authentication of the data being sent , by implementing the SIP protocol , and making sure the interaction is smooth with the Yahoo server .
   • July 5th to July 12th – Doing integration testing of the code , by using either freehoo or ayttm .
   • July 12th to July 19th - Providing a better GUI window for the user so that he/she can see live feed of web cams of both him/her and the person with whom he/she is having web cam conversation.
   • July 19th to July 26th – Implementing a mechanism of dealing with bots and more testing and debugging using integration testing
   • July 26th to August 4th – Test its efficiency by analyzing the packet dumps from the messenger which would have implemented the web cam support and then pushing it into the fedora package .
   • August 4th to August 9th – Prepare proper documentation , and wiki pages of the work done , and how to implement the protocol to build a messenger from it , thus helping the others in the community.
5. I have worked on my college projects , the first one was building an intranet code repository , which can be accessed through the lan , based on C , Python and Sql and a lot of socket programming . I also did a project dealing with implementation of an encryption called microTesla in network sensors , using nesC as my final year project . I have also worked in Centre for Artificial Intelligence and Robotics in implementing various papers and then building a robotics framework , similar to ROS ,with the help of my mentor and other colleagues there . Have also worked as a free lance coder building lexers , code debuggers for others . My knowledge in C is efficient and my network basics are in depth . I have also worked in various hacking competitions in IIT Chennai fest , which needed usage of wireshark .

You and the community

If my project is completed

1. • Mine : This would bring a wholesome look to the messengers in fedora like freehoo and ayttm , which have been based on libyahoo2 , as they would be having support similar to any messenger working on windows . Previously , to attain the functionality of yahoo messenger , it had to be installed through wine , but could never give the similar features or feel as it could give in windows. With libyahoo2 and all features like web cam support up and runing , it can give a huge boost to developers building messengers for modern day usage . Future development can also be trying to use the protocol to do video streaming , which can only result in more popularity fedora , linux , and the open source community in general.
   • Mentor : libyahoo2 is packaged for Fedora and is used by two instant messengers

in Fedora -- freehoo and ayttm. Those messengers can then avail of the webcam feature as a result of successful completion of this project.

1. If I get stuck , I will take help from the various libyahoo2 forums , libyahoo2 mailing list , my fellow libyahoo2 enthusiasts who would be working on libyahoo2 and also use sites like StackOverflow or ServerFault to advantage .
2. Apart from blogging twice a week , I shall keep my mentor informed about the progress with constant exchange of mails , I would also be in touch with the others who are working on libyahoo2 FSOC proposals , so that the work can be coherent .

Miscellaneous

1. I have installed libyahoo2 , ayttm , yahoo messenger on wine , tcpdump , wireshark , have read the RFC’s regarding various protocols and also have gone through the code of libyahoo2 .
2. Yes , I have been in constant touch with Siddhesh Poyarekar, who is going to be the mentor of the project . He has been extremely helpful and has been providing guidance in the project.
3. My tshirt size is L .
4. I was suspended from my computer lab when I was in Std-4 , as I put an infinite for loop which somehow managed to crash the computer in gw basic . I wasn’t any good in computers then and I took it up as a challenge to understand why I was being punished , when all my fault was putting an infinite loop . It took me 1 year to figure out what exactly had happened , as none of my teachers knew the answer and there wasn’t much of internet around my place . Stack Overflow , the problem which crashed the computer , but it was not the problem , but the learning curve towards knowing that it was a huge push for me in the field of computers and there was no looking back since then .
5. I believe in my abilities of doing well , and like to think twice before I code .

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