Is there an open source (free) client or code for bitcoin transactions [duplicate]

Question

Possible Duplicate:
How can I accept bitcoins on my website?

I have a few websites I am working on, but is there an open source code I can use that will allow people to deposit bitcoins on my site to where each user would have a unique deposit address?

Answer 1

In the past, I've implemented this just by asking the standard Bitcoin client to generate a few thousand addresses and then just have the web site give them out one by one. It's a bit slow generating the addresses, but if you let it run overnight, you'll have a virtually unlimited supply.

Don't forget to backup the wallet immediately after doing this!

Answer 2

Combine the suggestion from @David of pregenerating lots of address with Bitcoin Notify and you can build a system that knows when someone has sent you bitcoins (as part of a checkout process, etc).

Answer 3

This is an excellent service for precisely what you're seeking: http://www.bitcoinpayflow.com/

Answer 4

You will need bitcoin-python: https://github.com/toomanysecrets0/bitcoin-python

You will also need MySQLdb

Here's something that should work on a LAMP(ython) server I would sanitize the inputs before putting this in production use though:

#!/usr/bin/env python    

import MySQLdb
import bitcoin
import cgi

DbHost   = "localhost"
DbDatabase = "database name"
DbUser   = "database user"
DbPassword = "database password"

def getAddress(idnumber):

    db = MySQLdb.connect(host=DbHost, user=DbUser, passwd=DbPassword ,db=DbDatabase)

    c=db.cursor()

    c.execute("SELECT * FROM `address` WHERE idnumber=" + "'" + str(idnumber) + "'")

    address = c.fetchone()

    if  address != None:
        returnaddress = address[1]

    else:
        c.execute("SELECT username,idnumber FROM `address` where idnumber=" + "'" + str(idnumber) + "'")
        user = c.fetchone()    
        if  user != None:
            userid = user[0]
            #Generate a new bitcoin address
            newaddress = generateAddress(userid)
            returnaddress = newaddress


            c.execute("INSERT INTO address(idnumber,receiving_address,username) VALUES(" + str(idnumber) + "," + "'" + str(newaddress) + "'" + "," + str(userid) + ")")
    else:
        return "Invalid userid"

return returnaddress