Mercurial > prosody-modules

annotate mod_auth_imap/auth_imap/sasl_imap.lib.lua @ 4748:a6b94f4fb065

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Correct unused reference $ref isn't supported yet, and this might not be the correct syntax, but now follows the other (un-)uses.
author Kim Alvefur <zash@zash.se>
date Thu, 04 Nov 2021 20:19:31 +0100
parents f384669a9359
children a106477f1a65
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
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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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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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92 if not conn:receive("*l"):match("^A OK") then
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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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96 end
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97 elseif caps then
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98 caps = caps:sub(2,-2); -- Strip surrounding []
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99 end
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100 if caps then
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101 for cap in caps:gmatch("%S+") do
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102 log("debug", "Capability: %s", cap);
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103 local mech = cap:match("AUTH=(.*)");
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104 if mech then
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105 log("debug", "Supported SASL mechanism: %s", mech);
1343
7dbde05b48a9 all the things: Remove trailing whitespace
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diff changeset
106 supported_mechs[mech] = mitm[mech] and true or nil;
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107 end
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108 end
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109 end
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110
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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
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
198 line, err = self.conn:receive("*l");
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;