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{
config,
lib,
pkgs,
...
}:
{
options.zpha.programs.gpg.enable = lib.mkEnableOption "gpg";
config = lib.mkIf config.zpha.programs.gpg.enable {
preservation.preserveAt."/persist".users.zaphyra.directories = lib.singleton {
mode = "0700";
directory = ".config/gnupg";
};
users.users.zaphyra.maid = {
packages = with pkgs; [
pcsc-tools
gnupg
];
environment.sessionVariables = {
GNUPGHOME = "/home/zaphyra/.config/gnupg";
};
programs.fish.config = ''
set -e SSH_AGENT_PID
begin
set -l gnupg_val 0
if set -q gnupg_SSH_AUTH_SOCK_by
set gnupg_val $gnupg_SSH_AUTH_SOCK_by
end
if test $gnupg_val -ne %self
set -x SSH_AUTH_SOCK (${lib.getExe' pkgs.gnupg "gpgconf"} --list-dirs agent-ssh-socket)
end
end
'';
programs.git.settings = {
user.signingKey = "BFE6386C8D66BCD4DAE14FC895F0FE7CD7E6A022";
commit.gpgSign = true;
};
file.xdg_config = {
"gnupg/gpg.conf".text = ''
keyserver "hkps://keyserver.ubuntu.com:443"
'';
"gnupg/scdaemon.conf".text = ''
disable-ccid
'';
"gnupg/gpg-agent.conf".text = ''
enable-ssh-support
default-cache-ttl 600
default-cache-ttl-ssh 600
pinentry-program "${lib.getExe pkgs.pinentry-gnome3}"
'';
"gnupg/sshcontrol".text = ''
595A90924C65444EF00F0890BA85DE2A57DD79B2
'';
};
systemd = {
services.gpg-agent = {
unitConfig = {
Description = "GnuPG cryptographic agent and passphrase cache";
Documentation = "man:gpg-agent(1)";
Requires = "gpg-agent.socket";
After = "gpg-agent.socket";
# This is a socket-activated service:
RefuseManualStart = true;
};
serviceConfig = {
ExecStart = "${lib.getExe' pkgs.gnupg "gpg-agent"} --supervised";
ExecReload = "${lib.getExe' pkgs.gnupg "gpgconf"} --reload gpg-agent";
Environment = [ "GNUPGHOME=~/.config/gnupg" ];
};
};
sockets =
let
hexStringToBase32 =
let
mod = a: b: a - a / b * b;
pow2 = lib.elemAt [
1
2
4
8
16
32
64
128
256
];
base32Alphabet = lib.stringToCharacters "ybndrfg8ejkmcpqxot1uwisza345h769";
hexToIntTable = lib.listToAttrs (
lib.genList (x: {
name = lib.toLower (lib.toHexString x);
value = x;
}) 16
);
initState = {
ret = "";
buf = 0;
bufBits = 0;
};
go =
{
ret,
buf,
bufBits,
}:
hex:
let
buf' = buf * pow2 4 + hexToIntTable.${hex};
bufBits' = bufBits + 4;
extraBits = bufBits' - 5;
in
if bufBits >= 5 then
{
ret = ret + lib.elemAt base32Alphabet (buf' / pow2 extraBits);
buf = mod buf' (pow2 extraBits);
bufBits = bufBits' - 5;
}
else
{
inherit ret;
buf = buf';
bufBits = bufBits';
};
in
hexString: (lib.foldl' go initState (lib.stringToCharacters hexString)).ret;
gpgconf =
dir:
let
hash = lib.substring 0 24 (
hexStringToBase32 (builtins.hashString "sha1" "/home/zaphyra/.config/gnupg")
);
subdir = "d.${hash}/${dir}";
in
"%t/gnupg/${subdir}";
mkSocket =
{
desc,
docs,
stream,
fdName,
}:
{
wantedBy = [ "sockets.target" ];
unitConfig = {
Description = desc;
Documentation = docs;
};
socketConfig = {
ListenStream = gpgconf "${stream}";
FileDescriptorName = fdName;
Service = "gpg-agent.service";
SocketMode = "0600";
DirectoryMode = "0700";
};
};
in
{
gpg-agent = mkSocket {
desc = "GnuPG cryptographic agent and passphrase cache";
docs = "man:gpg-agent(1)";
stream = "S.gpg-agent";
fdName = "std";
};
gpg-agent-ssh = mkSocket {
desc = "GnuPG cryptographic agent (ssh-agent emulation)";
docs = "man:gpg-agent(1) man:ssh-add(1) man:ssh-agent(1) man:ssh(1)";
stream = "S.gpg-agent.ssh";
fdName = "ssh";
};
};
};
};
};
}