author | Rob Hoelz <rob@hoelz.ro> |
Mon, 10 Dec 2012 22:33:07 +0100 | |
changeset 872 | 6fed90021f3c |
parent 846 | 5ddc43ce8993 |
child 902 | 490cb9161c81 |
permissions | -rw-r--r-- |
158
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parents:
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1 |
-- |
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2 |
-- NOTE: currently this uses lpc; when waqas fixes process, it can go back to that |
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3 |
-- |
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4 |
-- Prosody IM |
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5 |
-- Copyright (C) 2010 Waqas Hussain |
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6 |
-- Copyright (C) 2010 Jeff Mitchell |
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7 |
-- |
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8 |
-- This project is MIT/X11 licensed. Please see the |
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9 |
-- COPYING file in the source package for more information. |
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10 |
-- |
152 | 11 |
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12 |
||
13 |
local nodeprep = require "util.encodings".stringprep.nodeprep; |
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14 |
--local process = require "process"; |
846
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mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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15 |
local lpc; pcall(function() lpc = require "lpc"; end); |
152 | 16 |
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17 |
local config = require "core.configmanager"; |
168
cd8492748985
mod_auth_external: Renamed from mod_extauth. Update logging and options (external_auth_protocol, external_auth_command)
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18 |
local log = module._log; |
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19 |
local host = module.host; |
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20 |
local script_type = config.get(host, "core", "external_auth_protocol") or "generic"; |
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21 |
assert(script_type == "ejabberd" or script_type == "generic"); |
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cd8492748985
mod_auth_external: Renamed from mod_extauth. Update logging and options (external_auth_protocol, external_auth_command)
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parents:
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22 |
local command = config.get(host, "core", "external_auth_command") or ""; |
152 | 23 |
assert(type(command) == "string"); |
24 |
assert(not host:find(":")); |
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25 |
local usermanager = require "core.usermanager"; |
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local jid_bare = require "util.jid".bare; |
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mod_extauth: Updated to provide a SASL handler.
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local new_sasl = require "util.sasl".new; |
152 | 28 |
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29 |
local function send_query(text) |
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846
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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30 |
local tmpname = os.tmpname(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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31 |
local tmpfile = io.open(tmpname, "wb"); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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32 |
tmpfile:write(text); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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33 |
tmpfile:close(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
|
34 |
local p = io.popen(command.." < "..tmpname, "r"); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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changeset
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35 |
local result; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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changeset
|
36 |
if script_type == "ejabberd" then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
|
37 |
result = p:read(4); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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38 |
elseif script_type == "generic" then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
|
39 |
result = p:read(); |
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1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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parents:
152
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40 |
end |
846
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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changeset
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41 |
os.remove(tmpname); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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42 |
p:close(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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43 |
return result; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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44 |
end |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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45 |
|
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
|
46 |
if lpc then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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47 |
--local proc; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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48 |
local pid; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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49 |
local readfile; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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50 |
local writefile; |
197
2686221255cf
restart authorize command if crashed or ended; added example shell script
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51 |
|
846
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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52 |
function send_query(text) |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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53 |
if pid and lpc.wait(pid,1) ~= nil then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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54 |
log("debug","error, process died, force reopen"); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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55 |
pid=nil; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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56 |
end |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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57 |
if not pid then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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58 |
log("debug", "Opening process " .. command); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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59 |
-- proc = process.popen(command); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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60 |
pid, writefile, readfile = lpc.run(command); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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61 |
end |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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62 |
-- if not proc then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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63 |
if not pid then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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64 |
log("debug", "Process failed to open"); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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65 |
return nil; |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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changeset
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66 |
end |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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67 |
-- proc:write(text); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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-- proc:flush(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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69 |
|
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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70 |
writefile:write(text); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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71 |
writefile:flush(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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72 |
if script_type == "ejabberd" then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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73 |
-- return proc:read(4); -- FIXME do properly |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
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74 |
return readfile:read(4); -- FIXME do properly |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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75 |
elseif script_type == "generic" then |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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76 |
-- return proc:read(1); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
changeset
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77 |
return readfile:read(); |
5ddc43ce8993
mod_auth_external: Work even when the LuaProcessCall library isn't available.
Waqas Hussain <waqas20@gmail.com>
parents:
816
diff
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78 |
end |
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Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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parents:
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79 |
end |
152 | 80 |
end |
81 |
||
82 |
function do_query(kind, username, password) |
|
83 |
if not username then return nil, "not-acceptable"; end |
|
84 |
username = nodeprep(username); |
|
85 |
if not username then return nil, "jid-malformed"; end |
|
86 |
||
87 |
local query = (password and "%s:%s:%s:%s" or "%s:%s:%s"):format(kind, username, host, password); |
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88 |
local len = #query |
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89 |
if len > 1000 then return nil, "policy-violation"; end |
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90 |
||
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91 |
if script_type == "ejabberd" then |
1a5d5d4f08fe
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92 |
local lo = len % 256; |
1a5d5d4f08fe
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93 |
local hi = (len - lo) / 256; |
1a5d5d4f08fe
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94 |
query = string.char(hi, lo)..query; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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95 |
end |
1a5d5d4f08fe
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parents:
152
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96 |
if script_type == "generic" then |
1a5d5d4f08fe
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parents:
152
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97 |
query = query..'\n'; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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parents:
152
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98 |
end |
152 | 99 |
|
100 |
local response = send_query(query); |
|
158
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101 |
if (script_type == "ejabberd" and response == "\0\2\0\0") or |
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parents:
152
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102 |
(script_type == "generic" and response == "0") then |
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parents:
152
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103 |
return nil, "not-authorized"; |
1a5d5d4f08fe
Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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parents:
152
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|
104 |
elseif (script_type == "ejabberd" and response == "\0\2\0\1") or |
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parents:
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105 |
(script_type == "generic" and response == "1") then |
1a5d5d4f08fe
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parents:
152
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|
106 |
return true; |
152 | 107 |
else |
168
cd8492748985
mod_auth_external: Renamed from mod_extauth. Update logging and options (external_auth_protocol, external_auth_command)
Matthew Wild <mwild1@gmail.com>
parents:
166
diff
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|
108 |
log("debug", "Nonsense back"); |
158
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Add "generic" script support to mod_extauth, as well as lpc support until waqas fixes process
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parents:
152
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|
109 |
--proc:close(); |
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parents:
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|
110 |
--proc = nil; |
152 | 111 |
return nil, "internal-server-error"; |
112 |
end |
|
113 |
end |
|
114 |
||
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
|
115 |
local host = module.host; |
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
|
116 |
local provider = {}; |
152 | 117 |
|
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
|
118 |
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
|
119 |
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
|
120 |
end |
152 | 121 |
|
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
|
122 |
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
|
123 |
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
|
124 |
end |
152 | 125 |
|
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
|
126 |
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
|
127 |
return do_query("isuser", username); |
152 | 128 |
end |
129 |
||
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
|
130 |
function provider.create_user(username, password) return nil, "Account creation/modification not available."; 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
|
131 |
|
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
|
132 |
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
|
133 |
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
|
134 |
plain_test = function(sasl, username, password, realm) |
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 |
local prepped_username = nodeprep(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
|
136 |
if not prepped_username then |
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 |
log("debug", "NODEprep failed on username: %s", 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 "", nil; |
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
|
139 |
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
|
140 |
return usermanager.test_password(prepped_username, realm, password), true; |
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
|
141 |
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
|
142 |
}; |
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
|
143 |
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
|
144 |
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
|
145 |
|
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 |
function provider.is_admin(jid) |
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 |
local admins = config.get(host, "core", "admins"); |
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
|
148 |
if admins ~= config.get("*", "core", "admins") then |
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 |
if type(admins) == "table" then |
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 |
jid = jid_bare(jid); |
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 |
for _,admin in ipairs(admins) do |
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 |
if admin == jid then return true; 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 |
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
|
154 |
elseif admins then |
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
|
155 |
log("error", "Option 'admins' for host '%s' is not a table", host); |
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
|
156 |
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
|
157 |
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
|
158 |
return usermanager.is_admin(jid); -- Test whether it's a global admin instead |
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
|
159 |
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
|
160 |
|
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
|
161 |
module:provides("auth", provider); |