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local posix = require "posix.grp";
local pam = require "pam";
local new_sasl = require "util.sasl".new;
function is_real_user(username)
for i,v in ipairs(posix.getgrnam("xmpp").gr_mem) do
if username == v then
return true;
end
end
return false;
end
function user_exists(username)
return is_real_user(username);
end
function test_password(username, password)
print("Testing password");
local h, err = pam.start("xmpp", username, {
function (t)
local responses = {}
for i,m in ipairs(t) do
if m[1] == pam.PAM_PROMPT_ECHO_OFF then
print("sending password");
responses[i] = {password, 0};
elseif m[1] == pam.PAM_PROMPT_ECHO_ON then
print("sending username");
responses[i] = {username, 0};
else
print("sending empty response");
responses[i] = {"", 0};
end
end
return responses
end
});
if h and h:authenticate() and h:endx(pam.PAM_SUCCESS) then
return true, true;
end
return nil, true;
end
function get_sasl_handler()
return new_sasl(module.host, {
plain_test = function(sasl, ...)
return test_password(...)
end
});
end
module:provides"auth";
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