Mercurial > prosody-modules

annotate mod_auth_imap/auth_imap/sasl_imap.lib.lua @ 5593:6d0574bfbf5d

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mod_client_management: Include software version in table (when known) Showing software versions could be useful for statistical reasons, e.g. determining how quickly (or not) users upgrade, but most importantly for revoking vulnerable clients versions in case of a security issue.
author Kim Alvefur <zash@zash.se>
date Thu, 13 Jul 2023 23:26:02 +0200
parents a106477f1a65
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- Dovecot authentication backend for Prosody
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2 --
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3 -- Copyright (C) 2011 Kim Alvefur
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4 --
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5
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6 local log = require "util.logger".init("sasl_imap");
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7
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8 local setmetatable = setmetatable;
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9
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10 local s_match = string.match;
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11 local t_concat = table.concat;
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12 local tostring, tonumber = tostring, tonumber;
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13
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14 local socket = require "socket"
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15 local ssl = require "ssl"
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16 local x509 = require "util.x509";
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17 local base64 = require "util.encodings".base64;
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18 local b64, unb64 = base64.encode, base64.decode;
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19
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
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20 local _M = {};
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21
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22 local method = {};
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23 method.__index = method;
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24
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25 -- For extracting the username.
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26 local mitm = {
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27 PLAIN = function(message)
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28 return s_match(message, "^[^%z]*%z([^%z]+)%z[^%z]+");
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29 end,
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30 ["SCRAM-SHA-1"] = function(message)
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31 return s_match(message, "^[^,]+,[^,]*,n=([^,]*)");
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32 end,
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33 ["DIGEST-MD5"] = function(message)
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34 return s_match(message, "username=\"([^\"]*)\"");
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35 end,
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36 }
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37
1200
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parents: 1199
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38 local function connect(host, port, ssl_params)
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39 port = tonumber(port) or (ssl_params and 993 or 143);
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40 log("debug", "connect() to %s:%s:%d", ssl_params and "ssl" or "tcp", host, tonumber(port));
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41 local conn = socket.tcp();
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42
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43 -- Create a connection to imap socket
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44 log("debug", "connecting to imap at '%s:%d'", host, port);
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45 local ok, err = conn:connect(host, port);
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46 conn:settimeout(10);
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47 if not ok then
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48 log("error", "error connecting to imap at '%s:%d': %s", host, port, err);
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49 return false;
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50 end
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51
1200
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52 if ssl_params then
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53 -- Perform SSL handshake
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54 local ok, err = ssl.wrap(conn, ssl_params);
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55 if ok then
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56 conn = ok;
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57 ok, err = conn:dohandshake();
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58 end
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59 if not ok then
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60 log("error", "error initializing ssl connection to imap at '%s:%d': %s", host, port, err);
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61 conn:close();
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62 return false;
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63 end
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64
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65 -- Verify certificate
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66 if ssl_params.verify then
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67 if not conn.getpeercertificate then
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68 log("error", "unable to verify certificate, newer LuaSec required: https://prosody.im/doc/depends#luasec");
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69 conn:close();
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70 return false;
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71 end
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72 if not x509.verify_identity(host, nil, conn:getpeercertificate()) then
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73 log("warn", "invalid certificate for imap service %s:%d, denying connection", host, port);
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74 return false;
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75 end
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76 end
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77 end
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78
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79 -- Parse IMAP handshake
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80 local supported_mechs = {};
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81 local line = conn:receive("*l");
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82 if not line then
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83 return false;
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84 end
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85 log("debug", "imap greeting: '%s'", line);
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86 local caps = line:match("^%*%s+OK%s+(%b[])");
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87 if not caps or not caps:match("^%[CAPABILITY ") then
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andrewhotlab <andrew.hotlab@hotmail.com>
parents: 1343
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88 conn:send("A CAPABILITY\r\n");
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89 line = conn:receive("*l");
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90 log("debug", "imap capabilities response: '%s'", line);
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91 caps = line:match("^%*%s+CAPABILITY%s+(.*)$");
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parents: 1199
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92 if not conn:receive("*l"):match("^A OK") then
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parents: 1199
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93 log("debug", "imap capabilities command failed")
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94 conn:close();
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95 return false;
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diff changeset
96 end
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97 elseif caps then
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parents: 1199
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98 caps = caps:sub(2,-2); -- Strip surrounding []
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diff changeset
99 end
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100 if caps then
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parents:
diff changeset
101 for cap in caps:gmatch("%S+") do
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parents:
diff changeset
102 log("debug", "Capability: %s", cap);
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parents:
diff changeset
103 local mech = cap:match("AUTH=(.*)");
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parents:
diff changeset
104 if mech then
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parents:
diff changeset
105 log("debug", "Supported SASL mechanism: %s", mech);
1343
7dbde05b48a9 all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1200
diff changeset
106 supported_mechs[mech] = mitm[mech] and true or nil;
1196
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parents:
diff changeset
107 end
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parents:
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108 end
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109 end
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110
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diff changeset
111 return conn, supported_mechs;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
112 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
113
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114 -- create a new SASL object which can be used to authenticate clients
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
115 function _M.new(realm, service_name, host, port, ssl_params, append_host)
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
116 log("debug", "new(%q, %q, %q, %d)", realm or "", service_name or "", host or "", port or 0);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
117 local sasl_i = {
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
118 realm = realm;
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
119 service_name = service_name;
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
120 _host = host;
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
121 _port = port;
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
122 _ssl_params = ssl_params;
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
123 _append_host = append_host;
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
124 };
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
125
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
126 local conn, mechs = connect(host, port, ssl_params);
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
127 if not conn then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
128 return nil, "Socket connection failure";
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
129 end
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
130 if append_host then
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
131 mechs = { PLAIN = mechs.PLAIN };
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
132 end
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
133 sasl_i.conn, sasl_i.mechs = conn, mechs;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
134 return setmetatable(sasl_i, method);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
135 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
136
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
137 -- get a fresh clone with the same realm and service name
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
138 function method:clean_clone()
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
139 if self.conn then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
140 self.conn:close();
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
141 self.conn = nil;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
142 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 log("debug", "method:clean_clone()");
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
144 return _M.new(self.realm, self.service_name, self._host, self._port, self._ssl_params, self._append_host)
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
145 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
146
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
147 -- get a list of possible SASL mechanisms to use
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
148 function method:mechanisms()
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
149 log("debug", "method:mechanisms()");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
150 return self.mechs;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
151 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
152
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
153 -- select a mechanism to use
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
154 function method:select(mechanism)
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
155 log("debug", "method:select(%q)", mechanism);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
156 if not self.selected and self.mechs[mechanism] then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
157 self.tag = tostring({}):match("0x(%x*)$");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
158 self.selected = mechanism;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
159 local selectmsg = t_concat({ self.tag, "AUTHENTICATE", mechanism }, " ");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 log("debug", "Sending %d bytes: %q", #selectmsg, selectmsg);
3763
f384669a9359 mod_auth_imap: send CRLF instead LF, in order to be compliant with RFC3501
andrewhotlab <andrew.hotlab@hotmail.com>
parents: 1343
diff changeset
161 local ok, err = self.conn:send(selectmsg.."\r\n");
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
162 if not ok then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
163 log("error", "Could not write to socket: %s", err);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
164 return "failure", "internal-server-error", err
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
165 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
166 local line, err = self.conn:receive("*l");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 if not line then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
168 log("error", "Could not read from socket: %s", err);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
169 return "failure", "internal-server-error", err
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
170 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 log("debug", "Received %d bytes: %q", #line, line);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
172 return line:match("^+")
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
173 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
175
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
176 -- feed new messages to process into the library
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177 function method:process(message)
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 local username = mitm[self.selected](message);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
179 if username then self.username = username; end
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
180 if self._append_host and self.selected == "PLAIN" then
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
181 message = message:gsub("^([^%z]*%z[^%z]+)(%z[^%z]+)$", "%1@"..self.realm.."%2");
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
182 end
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
183 log("debug", "method:process(%d bytes): %q", #message, message:gsub("%z", "."));
3763
f384669a9359 mod_auth_imap: send CRLF instead LF, in order to be compliant with RFC3501
andrewhotlab <andrew.hotlab@hotmail.com>
parents: 1343
diff changeset
184 local ok, err = self.conn:send(b64(message).."\r\n");
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
185 if not ok then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
186 log("error", "Could not write to socket: %s", err);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
187 return "failure", "internal-server-error", err
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
188 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
189 log("debug", "Sent %d bytes to socket", ok);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
190 local line, err = self.conn:receive("*l");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 if not line then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
192 log("error", "Could not read from socket: %s", err);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
193 return "failure", "internal-server-error", err
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 log("debug", "Received %d bytes from socket: %s", #line, line);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
196
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
197 while line and line:match("^%* ") do
5013
a106477f1a65 mod_auth_imap: Remove unused variable [luacheck]
Kim Alvefur <zash@zash.se>
parents: 3763
diff changeset
198 line = self.conn:receive("*l");
1200
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
199 end
34216cdffda6 mod_auth_imap: unfortunately large commit which adds support for SSL (including cert verification), appending the realm to usernames, and various IMAP protocol fixes
Matthew Wild <mwild1@gmail.com>
parents: 1199
diff changeset
200
1196
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 if line:match("^%+") and #line > 2 then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 local data = line:sub(3);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203 data = data and unb64(data);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
204 return "challenge", unb64(data);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
205 elseif line:sub(1, #self.tag) == self.tag then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
206 local ok, rest = line:sub(#self.tag+1):match("(%w+)%s+(.*)");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
207 ok = ok:lower();
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
208 log("debug", "%s: %s", ok, rest);
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
209 if ok == "ok" then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
210 return "success"
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
211 elseif ok == "no" then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
212 return "failure", "not-authorized", rest;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
214 elseif line:match("^%* BYE") then
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 local err = line:match("BYE%s*(.*)");
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216 return "failure", "not-authorized", err;
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 end
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219
f45ca6edc159 mod_auth_imap: Authentication module that works by passing through SASL to a IMAP connection
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 return _M;