9 -- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. |
9 -- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. |
10 -- * Neither the name of Tobias Markmann nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. |
10 -- * Neither the name of Tobias Markmann nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. |
11 -- |
11 -- |
12 -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
12 -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
13 |
13 |
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14 local tostring = tostring; |
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15 local type = type; |
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16 |
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17 local s_gmatch = string.gmatch; |
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18 local s_match = string.match; |
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19 local t_concat = table.concat; |
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20 local t_insert = table.insert; |
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21 local to_byte, to_char = string.byte, string.char; |
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22 |
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23 local md5 = require "util.hashes".md5; |
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24 local log = require "util.logger".init("sasl"); |
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25 local generate_uuid = require "util.uuid".generate; |
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26 |
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27 module "plain" |
14 |
28 |
15 --========================= |
29 --========================= |
16 --SASL DIGEST-MD5 according to RFC 2831 |
30 --SASL DIGEST-MD5 according to RFC 2831 |
17 local function sasl_mechanism_digest_md5(self, message) |
31 local function digest_response() |
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32 |
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33 return response, A1, A2 |
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34 end |
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35 |
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36 local function digest(self, message) |
18 --TODO complete support for authzid |
37 --TODO complete support for authzid |
19 |
38 |
20 local function serialize(message) |
39 local function serialize(message) |
21 local data = "" |
40 local data = "" |
22 |
41 |
66 end |
85 end |
67 return t_concat(p); |
86 return t_concat(p); |
68 end |
87 end |
69 local function latin1toutf8(str) |
88 local function latin1toutf8(str) |
70 local p = {}; |
89 local p = {}; |
71 for ch in gmatch(str, ".") do |
90 for ch in s_gmatch(str, ".") do |
72 ch = to_byte(ch); |
91 ch = to_byte(ch); |
73 if (ch < 0x80) then |
92 if (ch < 0x80) then |
74 t_insert(p, to_char(ch)); |
93 t_insert(p, to_char(ch)); |
75 elseif (ch < 0xC0) then |
94 elseif (ch < 0xC0) then |
76 t_insert(p, to_char(0xC2, ch)); |
95 t_insert(p, to_char(0xC2, ch)); |
94 self.nonce_count = {}; |
113 self.nonce_count = {}; |
95 end |
114 end |
96 |
115 |
97 self.step = self.step + 1; |
116 self.step = self.step + 1; |
98 if (self.step == 1) then |
117 if (self.step == 1) then |
99 local challenge = serialize({ nonce = object.nonce, |
118 local challenge = serialize({ nonce = self.nonce, |
100 qop = "auth", |
119 qop = "auth", |
101 charset = "utf-8", |
120 charset = "utf-8", |
102 algorithm = "md5-sess", |
121 algorithm = "md5-sess", |
103 realm = self.realm}); |
122 realm = self.realm}); |
104 return "challenge", challenge; |
123 return "challenge", challenge; |
148 return "failure", "malformed-request", "Missing entry for digest-uri in SASL message." |
167 return "failure", "malformed-request", "Missing entry for digest-uri in SASL message." |
149 end |
168 end |
150 |
169 |
151 --TODO maybe realm support |
170 --TODO maybe realm support |
152 self.username = response["username"]; |
171 self.username = response["username"]; |
153 local password_encoding, Y = self.credentials_handler("DIGEST-MD5", response["username"], self.realm, response["realm"], decoder); |
172 if self.profile.plain then |
154 if Y == nil then return "failure", "not-authorized" |
173 local password, state = self.profile.plain(response["username"], self.realm) |
155 elseif Y == false then return "failure", "account-disabled" end |
174 if state == nil then return "failure", "not-authorized" |
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175 elseif state == false then return "failure", "account-disabled" end |
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176 Y = md5(response["username"]..":"..self.realm..":"..password); |
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177 elseif self.profile["digest-md5"] then |
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178 --local Y, state = self.profile["digest-md5"](response["username"], self.realm, response["charset"]) |
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179 elseif self.profile["digest-md5-test"] then |
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180 |
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181 end |
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182 --local password_encoding, Y = self.credentials_handler("DIGEST-MD5", response["username"], self.realm, response["realm"], decoder); |
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183 --if Y == nil then return "failure", "not-authorized" |
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184 --elseif Y == false then return "failure", "account-disabled" end |
156 local A1 = ""; |
185 local A1 = ""; |
157 if response.authzid then |
186 if response.authzid then |
158 if response.authzid == self.username.."@"..self.realm then |
187 if response.authzid == self.username.."@"..self.realm then |
159 -- COMPAT |
188 -- COMPAT |
160 log("warn", "Client is violating XMPP RFC. See section 6.1 of RFC 3920."); |
189 log("warn", "Client is violating XMPP RFC. See section 6.1 of RFC 3920."); |