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1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
2 | * Copyright (c) 2006, Adam Chlipala |
3 | * |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; either version 2 |
7 | * of the License, or (at your option) any later version. |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | *) |
18 | |
19 | (* OpenSSL *) |
20 | |
21 | structure OpenSSL :> OPENSSL = struct |
22 | |
23 | val () = (F_OpenSSL_SML_init.f' (); |
24 | F_OpenSSL_SML_load_error_strings.f' (); |
25 | F_OpenSSL_SML_load_BIO_strings.f' ()) |
26 | |
27 | exception OpenSSL of string |
28 | |
29 | type context = (ST_ssl_ctx_st.tag, C_Int.rw) C_Int.su_obj C_Int.ptr' |
30 | type bio = (ST_bio_st.tag, C_Int.rw) C_Int.su_obj C_Int.ptr' |
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31 | type listener = bio |
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32 | |
33 | fun ssl_err s = |
34 | let |
35 | val err = F_OpenSSL_SML_get_error.f () |
36 | |
37 | val lib = F_OpenSSL_SML_lib_error_string.f err |
38 | val func = F_OpenSSL_SML_func_error_string.f err |
39 | val reason = F_OpenSSL_SML_reason_error_string.f err |
40 | in |
41 | print s; |
42 | print "\nReason: "; |
43 | if C.Ptr.isNull lib then |
44 | () |
45 | else |
46 | (print (ZString.toML lib); |
47 | print ":"); |
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48 | if C.Ptr.isNull func then |
49 | () |
50 | else |
51 | (print (ZString.toML func); |
52 | print ":"); |
53 | if C.Ptr.isNull reason then |
54 | () |
55 | else |
56 | print (ZString.toML reason); |
57 | print "\n" |
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58 | end |
59 | |
60 | val readBuf : (C.uchar, C.rw) C.obj C.ptr' = C.alloc' C.S.uchar (Word.fromInt Config.bufSize) |
61 | val bufSize = Int32.fromInt Config.bufSize |
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62 | val one = Int32.fromInt 1 |
63 | val four = Int32.fromInt 4 |
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64 | |
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65 | val eight = Word.fromInt 8 |
66 | val sixteen = Word.fromInt 16 |
67 | val twentyfour = Word.fromInt 24 |
68 | |
69 | val mask1 = Word32.fromInt 255 |
70 | |
71 | fun readChar bio = |
72 | let |
73 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, one) |
74 | in |
75 | if r = 0 then |
76 | NONE |
77 | else if r < 0 then |
78 | (ssl_err "BIO_read"; |
79 | raise OpenSSL "BIO_read failed") |
80 | else |
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81 | SOME (chr (Compat.Char.toInt (C.Get.uchar' |
82 | (C.Ptr.sub' C.S.uchar (readBuf, 0))))) |
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83 | end |
84 | |
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85 | val charToWord = Word32.fromLargeWord o Compat.Char.toLargeWord |
86 | |
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87 | fun readInt bio = |
88 | let |
89 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, four) |
90 | in |
91 | if r = 0 then |
92 | NONE |
93 | else if r < 0 then |
94 | (ssl_err "BIO_read"; |
95 | raise OpenSSL "BIO_read failed") |
96 | else |
97 | SOME (Word32.toInt |
98 | (Word32.+ |
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99 | (charToWord (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0))), |
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100 | Word32.+ |
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101 | (Word32.<< (charToWord (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 1))), |
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102 | eight), |
103 | Word32.+ |
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104 | (Word32.<< (charToWord (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 2))), |
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105 | sixteen), |
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106 | Word32.<< (charToWord (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 3))), |
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107 | twentyfour)))))) |
108 | end |
109 | |
110 | fun readLen (bio, len) = |
111 | let |
112 | val buf = |
113 | if len > Config.bufSize then |
114 | C.alloc' C.S.uchar (Word.fromInt len) |
115 | else |
116 | readBuf |
117 | |
118 | fun cleanup () = |
119 | if len > Config.bufSize then |
120 | C.free' buf |
121 | else |
122 | () |
123 | |
124 | fun loop (buf', needed) = |
125 | let |
126 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' buf, Int32.fromInt len) |
127 | in |
128 | if r = 0 then |
129 | (cleanup (); NONE) |
130 | else if r < 0 then |
131 | (cleanup (); |
132 | ssl_err "BIO_read"; |
133 | raise OpenSSL "BIO_read failed") |
134 | else if r = needed then |
135 | SOME (CharVector.tabulate (Int32.toInt needed, |
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136 | fn i => chr (Compat.Char.toInt (C.Get.uchar' |
137 | (C.Ptr.sub' C.S.uchar (buf, i)))))) |
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138 | else |
139 | loop (C.Ptr.|+! C.S.uchar (buf', Int32.toInt r), needed - r) |
140 | end |
141 | in |
142 | loop (buf, Int32.fromInt len) |
143 | before cleanup () |
144 | end |
145 | |
146 | fun readChunk bio = |
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147 | let |
148 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, bufSize) |
149 | in |
150 | if r = 0 then |
151 | NONE |
152 | else if r < 0 then |
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153 | (ssl_err "BIO_read"; |
154 | raise OpenSSL "BIO_read failed") |
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155 | else |
156 | SOME (CharVector.tabulate (Int32.toInt r, |
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157 | fn i => chr (Compat.Char.toInt (C.Get.uchar' |
158 | (C.Ptr.sub' C.S.uchar (readBuf, i)))))) |
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159 | end |
160 | |
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161 | fun readString bio = |
162 | case readInt bio of |
163 | NONE => NONE |
164 | | SOME len => readLen (bio, len) |
165 | |
166 | fun writeChar (bio, ch) = |
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167 | let |
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168 | val _ = C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0), |
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169 | Compat.Char.fromInt (ord ch)) |
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170 | |
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171 | fun trier () = |
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172 | let |
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173 | val r = F_OpenSSL_SML_write.f' (bio, C.Ptr.inject' readBuf, one) |
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174 | in |
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175 | if r = 0 then |
176 | trier () |
177 | else if r < 0 then |
178 | (ssl_err "BIO_write"; |
179 | raise OpenSSL "BIO_write") |
180 | else |
181 | () |
182 | end |
183 | in |
184 | trier () |
185 | end |
186 | |
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187 | val wordToChar = Compat.Char.fromLargeWord o Word32.toLargeWord |
188 | |
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189 | fun writeInt (bio, n) = |
190 | let |
191 | val w = Word32.fromInt n |
192 | |
193 | val _ = (C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0), |
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194 | wordToChar (Word32.andb (w, mask1))); |
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195 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 1), |
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196 | wordToChar (Word32.andb (Word32.>> (w, eight), mask1))); |
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197 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 2), |
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198 | wordToChar (Word32.andb (Word32.>> (w, sixteen), mask1))); |
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199 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 3), |
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200 | wordToChar (Word32.andb (Word32.>> (w, twentyfour), mask1)))) |
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201 | |
202 | fun trier (buf, count) = |
203 | let |
204 | val r = F_OpenSSL_SML_write.f' (bio, C.Ptr.inject' buf, count) |
205 | in |
206 | if r < 0 then |
207 | (ssl_err "BIO_write"; |
208 | raise OpenSSL "BIO_write") |
209 | else if r = count then |
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210 | () |
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211 | else |
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212 | trier (C.Ptr.|+! C.S.uchar (buf, Int32.toInt r), count - r) |
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213 | end |
214 | in |
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215 | trier (readBuf, 4) |
216 | end |
217 | |
218 | fun writeString' (bio, s) = |
219 | let |
220 | val buf = ZString.dupML' s |
221 | in |
222 | if F_OpenSSL_SML_puts.f' (bio, buf) <= 0 then |
223 | (C.free' buf; |
224 | ssl_err "BIO_puts"; |
225 | raise OpenSSL "BIO_puts") |
226 | else |
227 | C.free' buf |
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228 | end |
229 | |
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230 | fun writeString (bio, s) = |
231 | (writeInt (bio, size s); |
232 | writeString' (bio, s)) |
233 | |
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234 | fun context printErr (chain, key, root) = |
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235 | let |
236 | val context = F_OpenSSL_SML_CTX_new.f' (F_OpenSSL_SML_SSLv23_method.f' ()) |
237 | in |
238 | if C.Ptr.isNull' context then |
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239 | (if printErr then ssl_err "Error creating SSL context" else (); |
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240 | raise OpenSSL "Can't create SSL context") |
241 | else if F_OpenSSL_SML_use_certificate_chain_file.f' (context, |
242 | ZString.dupML' chain) |
243 | = 0 then |
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244 | (if printErr then ssl_err "Error using certificate chain" else (); |
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245 | F_OpenSSL_SML_CTX_free.f' context; |
246 | raise OpenSSL "Can't load certificate chain") |
247 | else if F_OpenSSL_SML_use_PrivateKey_file.f' (context, |
248 | ZString.dupML' key) |
249 | = 0 then |
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250 | (if printErr then ssl_err "Error using private key" else (); |
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251 | F_OpenSSL_SML_CTX_free.f' context; |
252 | raise OpenSSL "Can't load private key") |
253 | else if F_OpenSSL_SML_load_verify_locations.f' (context, |
254 | ZString.dupML' root, |
255 | C.Ptr.null') = 0 then |
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256 | (if printErr then ssl_err "Error loading trust store" else (); |
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257 | F_OpenSSL_SML_CTX_free.f' context; |
258 | raise OpenSSL "Can't load trust store") |
259 | else |
260 | context |
261 | end |
262 | |
263 | fun connect (context, hostname) = |
264 | let |
265 | val bio = F_OpenSSL_SML_new_ssl_connect.f' context |
266 | in |
267 | if C.Ptr.isNull' bio then |
268 | (ssl_err ("Error initializating connection to " ^ hostname); |
269 | F_OpenSSL_SML_free_all.f' bio; |
270 | raise OpenSSL "Can't initialize connection") |
271 | else if F_OpenSSL_SML_set_conn_hostname.f' (bio, ZString.dupML' hostname) = 0 then |
272 | (ssl_err ("Error setting hostname: " ^ hostname); |
273 | F_OpenSSL_SML_free_all.f' bio; |
274 | raise OpenSSL "Can't set hostname") |
275 | else if F_OpenSSL_SML_do_connect.f' bio <= 0 then |
276 | (ssl_err ("Error connecting to " ^ hostname); |
277 | F_OpenSSL_SML_free_all.f' bio; |
278 | raise OpenSSL "Can't connect") |
279 | else |
280 | bio |
281 | end |
282 | |
283 | fun close bio = F_OpenSSL_SML_free_all.f' bio |
284 | |
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285 | fun listen (context, port) = |
286 | let |
287 | val port = ZString.dupML' (Int.toString port) |
288 | val listener = F_OpenSSL_SML_new_accept.f' (context, port) |
289 | in |
290 | C.free' port; |
291 | if C.Ptr.isNull' listener then |
292 | (ssl_err "Null listener"; |
293 | raise OpenSSL "Null listener") |
294 | else if F_OpenSSL_SML_do_accept.f' listener <= 0 then |
295 | (ssl_err "Error initializing listener"; |
296 | close listener; |
297 | raise OpenSSL "Can't initialize listener") |
298 | else |
299 | listener |
300 | end |
301 | |
302 | val shutdown = close |
303 | |
304 | fun accept listener = |
305 | if F_OpenSSL_SML_do_accept.f' listener <= 0 then |
306 | NONE |
307 | else |
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308 | let |
309 | val bio = F_OpenSSL_SML_pop.f' listener |
310 | in |
311 | if C.Ptr.isNull' bio then |
312 | (ssl_err "Null accepted"; |
313 | raise OpenSSL "Null accepted") |
314 | else if F_OpenSSL_SML_do_handshake.f' bio <= 0 then |
315 | (ssl_err "Handshake failed"; |
316 | raise OpenSSL "Handshake failed") |
317 | else |
318 | SOME bio |
319 | end |
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320 | |
321 | fun peerCN bio = |
322 | let |
323 | val ssl = F_OpenSSL_SML_get_ssl.f' bio |
324 | val _ = if C.Ptr.isNull' ssl then |
325 | raise OpenSSL "Null SSL" |
326 | else |
327 | () |
328 | val subj = F_OpenSSL_SML_get_peer_name.f' ssl |
329 | in |
330 | if C.Ptr.isNull' subj then |
331 | raise OpenSSL "Null CN result" |
332 | else |
333 | ZString.toML' subj |
334 | end |
335 | |
336 | end |