author | Kim Alvefur <zash@zash.se> |
Sat, 25 Jan 2020 01:31:49 +0100 | |
changeset 3861 | 8752e5b5dd08 |
parent 3664 | 11cd6e034fd3 |
permissions | -rw-r--r-- |
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-- |
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-- Prosody IM |
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-- Copyright (C) 2010 Waqas Hussain |
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-- Copyright (C) 2010 Jeff Mitchell |
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-- Copyright (C) 2013 Mikael Nordfeldth |
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-- Copyright (C) 2013 Matthew Wild, finally came to fix it all |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
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-- COPYING file in the source package for more information. |
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-- |
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local lpty = assert(require "lpty", "mod_auth_external requires lpty: https://modules.prosody.im/mod_auth_external.html#installation"); |
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local usermanager = require "core.usermanager"; |
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local new_sasl = require "util.sasl".new; |
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local server = require "net.server"; |
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local have_async, async = pcall(require, "util.async"); |
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local log = module._log; |
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local host = module.host; |
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|
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local script_type = module:get_option_string("external_auth_protocol", "generic"); |
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local command = module:get_option_string("external_auth_command", ""); |
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local read_timeout = module:get_option_number("external_auth_timeout", 5); |
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local blocking = module:get_option_boolean("external_auth_blocking", true); -- non-blocking is very experimental |
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local auth_processes = module:get_option_number("external_auth_processes", 1); |
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assert(script_type == "ejabberd" or script_type == "generic", |
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"Config error: external_auth_protocol must be 'ejabberd' or 'generic'"); |
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assert(not host:find(":"), "Invalid hostname"); |
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|
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if not blocking then |
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assert(server.event, "External auth non-blocking mode requires libevent installed and enabled"); |
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log("debug", "External auth in non-blocking mode, yay!") |
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waiter, guard = async.waiter, async.guarder(); |
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elseif auth_processes > 1 then |
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log("warn", "external_auth_processes is greater than 1, but we are in blocking mode - reducing to 1"); |
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auth_processes = 1; |
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end |
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local ptys = {}; |
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|
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local pty_options = { throw_errors = false, no_local_echo = true, use_path = false }; |
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for i = 1, auth_processes do |
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ptys[i] = lpty.new(pty_options); |
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end |
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|
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function module.unload() |
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for i = 1, auth_processes do |
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ptys[i]:endproc(); |
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end |
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end |
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|
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module:hook_global("server-cleanup", module.unload); |
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local curr_process = 0; |
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function send_query(text) |
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curr_process = (curr_process%auth_processes)+1; |
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local pty = ptys[curr_process]; |
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|
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local finished_with_pty |
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if not blocking then |
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finished_with_pty = guard(pty); -- Prevent others from crossing this line while we're busy |
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end |
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if not pty:hasproc() then |
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local status, ret = pty:exitstatus(); |
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if status and (status ~= "exit" or ret ~= 0) then |
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log("warn", "Auth process exited unexpectedly with %s %d, restarting", status, ret or 0); |
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return nil; |
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70 |
end |
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71 |
local ok, err = pty:startproc(command); |
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if not ok then |
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73 |
log("error", "Failed to start auth process '%s': %s", command, err); |
61f95bf51b35
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74 |
return nil; |
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75 |
end |
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76 |
log("debug", "Started auth process"); |
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77 |
end |
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78 |
|
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pty:send(text); |
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80 |
if blocking then |
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81 |
return pty:read(read_timeout); |
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82 |
else |
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83 |
local response; |
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84 |
local wait, done = waiter(); |
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85 |
server.addevent(pty:getfd(), server.event.EV_READ, function () |
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86 |
response = pty:read(); |
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87 |
done(); |
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88 |
return -1; |
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89 |
end); |
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90 |
wait(); |
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91 |
finished_with_pty(); |
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mod_auth_external: Add non-blocking mode (requires trunk, libevent and lpty 1.0.1). Our first complete non-blocking auth module!
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92 |
return response; |
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93 |
end |
152 | 94 |
end |
95 |
||
96 |
function do_query(kind, username, password) |
|
97 |
if not username then return nil, "not-acceptable"; end |
|
1343
7dbde05b48a9
all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
1195
diff
changeset
|
98 |
|
152 | 99 |
local query = (password and "%s:%s:%s:%s" or "%s:%s:%s"):format(kind, username, host, password); |
100 |
local len = #query |
|
101 |
if len > 1000 then return nil, "policy-violation"; end |
|
1343
7dbde05b48a9
all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
1195
diff
changeset
|
102 |
|
158
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
103 |
if script_type == "ejabberd" then |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
104 |
local lo = len % 256; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
105 |
local hi = (len - lo) / 256; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
106 |
query = string.char(hi, lo)..query; |
1195
f502cbffbdd4
mod_auth_external: merge two if blocks with an elseif
Matthew Wild <mwild1@gmail.com>
parents:
1161
diff
changeset
|
107 |
elseif script_type == "generic" then |
158
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
108 |
query = query..'\n'; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
109 |
end |
1343
7dbde05b48a9
all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
1195
diff
changeset
|
110 |
|
1158
ae1767b54964
mod_auth_external: Fix logging of errors
Matthew Wild <mwild1@gmail.com>
parents:
1157
diff
changeset
|
111 |
local response, err = send_query(query); |
ae1767b54964
mod_auth_external: Fix logging of errors
Matthew Wild <mwild1@gmail.com>
parents:
1157
diff
changeset
|
112 |
if not response then |
ae1767b54964
mod_auth_external: Fix logging of errors
Matthew Wild <mwild1@gmail.com>
parents:
1157
diff
changeset
|
113 |
log("warn", "Error while waiting for result from auth process: %s", err or "unknown error"); |
ae1767b54964
mod_auth_external: Fix logging of errors
Matthew Wild <mwild1@gmail.com>
parents:
1157
diff
changeset
|
114 |
elseif (script_type == "ejabberd" and response == "\0\2\0\0") or |
1154
61f95bf51b35
mod_auth_external: Switch to lpty, remove file-based fallback, improve error messages and handling. Should greatly increase compatibility with scripts.
Matthew Wild <mwild1@gmail.com>
parents:
1086
diff
changeset
|
115 |
(script_type == "generic" and response:gsub("\r?\n$", "") == "0") then |
158
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
116 |
return nil, "not-authorized"; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
117 |
elseif (script_type == "ejabberd" and response == "\0\2\0\1") or |
1154
61f95bf51b35
mod_auth_external: Switch to lpty, remove file-based fallback, improve error messages and handling. Should greatly increase compatibility with scripts.
Matthew Wild <mwild1@gmail.com>
parents:
1086
diff
changeset
|
118 |
(script_type == "generic" and response:gsub("\r?\n$", "") == "1") then |
158
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
Jeff Mitchell <jeff@jefferai.org>
parents:
152
diff
changeset
|
119 |
return true; |
152 | 120 |
else |
2831
45380b77303d
mod_auth_external: Split long lines [luacheck]
Kim Alvefur <zash@zash.se>
parents:
2001
diff
changeset
|
121 |
log("warn", "Unable to interpret data from auth process, %s", |
45380b77303d
mod_auth_external: Split long lines [luacheck]
Kim Alvefur <zash@zash.se>
parents:
2001
diff
changeset
|
122 |
(response:match("^error:") and response) or ("["..#response.." bytes]")); |
152 | 123 |
return nil, "internal-server-error"; |
124 |
end |
|
125 |
end |
|
126 |
||
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
127 |
local provider = {}; |
152 | 128 |
|
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
129 |
function provider.test_password(username, password) |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
130 |
return do_query("auth", username, password); |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
131 |
end |
152 | 132 |
|
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
133 |
function provider.set_password(username, password) |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
134 |
return do_query("setpass", username, password); |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
135 |
end |
152 | 136 |
|
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
137 |
function provider.user_exists(username) |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
138 |
return do_query("isuser", username); |
152 | 139 |
end |
140 |
||
2833
8082bfc10e65
mod_auth_external: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents:
2832
diff
changeset
|
141 |
function provider.create_user(username, password) -- luacheck: ignore 212 |
8082bfc10e65
mod_auth_external: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents:
2832
diff
changeset
|
142 |
return nil, "Account creation/modification not available."; |
8082bfc10e65
mod_auth_external: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents:
2832
diff
changeset
|
143 |
end |
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
144 |
|
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
145 |
function provider.get_sasl_handler() |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
146 |
local testpass_authentication_profile = { |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
147 |
plain_test = function(sasl, username, password, realm) |
902
490cb9161c81
mod_auth_{external,internal_yubikey,ldap,ldap2,sql}: No need to nodeprep in SASL handler.
Waqas Hussain <waqas20@gmail.com>
parents:
846
diff
changeset
|
148 |
return usermanager.test_password(username, realm, password), true; |
816
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
149 |
end, |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
150 |
}; |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
151 |
return new_sasl(host, testpass_authentication_profile); |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
152 |
end |
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
153 |
|
960007b0901e
mod_auth_external, mod_auth_internal_yubikey: Get rid of useless wrapper function around the auth provider.
Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
154 |
module:provides("auth", provider); |