Description:
makepkg cannot download files if cookies is required. E.g. In the AUR exists packages with such behavior - jdk6, jdk7.
Oracle is restricted direct download of files. To able to download file need to specify cookie for it.

You can see attached patches for makepkg and makepkg.conf which resolved this. Changed jdk6 PKGBUILD is attached also.

Additional info:
* pacman 4.0.2

Steps to reproduce:
Try to install from AUR jdk6 or jre6.

Note:
I think that we have such resolutions for this issu:
1. Since this is not common problem we can commit this fix as is if somebody don't have objections =)
2. Implement new functionality which add to user(package/PKGBUILD) control how should download files.

E.g.:
source=("http://download.oracle.com/otn-pub/java/jdk/$pkgver-$pkgrel/jdk-$pkgver-linux-i586.bin"
'java-control-panel.desktop'
'java-monitoring-and-management-console.desktop'
'java-policy-settings.desktop'
'java-visualvm.desktop'
'java-web-start.desktop'
'jdk6.profile'
'jdk6.profile.csh'
'derby-network-server'
'derby-network-server.conf')
md5sums=('9e4246fc7a6c0759b8a484ff5e820112'
'e4d814c0f310d77ed6990c731bccd0fb'
'4bc2b0be93f76ed07b471e3c89eb5a8a'
'8e3cec7ab641ec449cabd068be583f5c'
'9ba148ebabce8ed3351b813a9a66b6e5'
'619ec32235dcfe454234ef4316f8a7cc'
'803ceeb0d98abdf800cf7452fce12e7c'
'3ce59ff37dc2598a5fcf66613851e1d5'
'a279e195e249000646895d93e199860d'
'4bdff6982c66d24a879c424aaac3d04d')
prebuild() {
wget --header "Cookie: ${cookies}" "${source[0]}
source[0]=$(get_filename "${source[0]}")
}

build() {
}


prebuild will run before calculating crc of the files and before build of course.

I'm not god =) in the bash so sorry for the ugly script, I'm just want to show the idea of the propose.