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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 ":"); |
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" |
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 |
81 | SOME (chr (Word32.toInt (C.Get.uchar' |
82 | (C.Ptr.sub' C.S.uchar (readBuf, 0))))) |
83 | end |
84 | |
85 | fun readInt bio = |
86 | let |
87 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, four) |
88 | in |
89 | if r = 0 then |
90 | NONE |
91 | else if r < 0 then |
92 | (ssl_err "BIO_read"; |
93 | raise OpenSSL "BIO_read failed") |
94 | else |
95 | SOME (Word32.toInt |
96 | (Word32.+ |
97 | (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0)), |
98 | Word32.+ |
99 | (Word32.<< (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 1)), |
100 | eight), |
101 | Word32.+ |
102 | (Word32.<< (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 2)), |
103 | sixteen), |
104 | Word32.<< (C.Get.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 3)), |
105 | twentyfour)))))) |
106 | end |
107 | |
108 | fun readLen (bio, len) = |
109 | let |
110 | val buf = |
111 | if len > Config.bufSize then |
112 | C.alloc' C.S.uchar (Word.fromInt len) |
113 | else |
114 | readBuf |
115 | |
116 | fun cleanup () = |
117 | if len > Config.bufSize then |
118 | C.free' buf |
119 | else |
120 | () |
121 | |
122 | fun loop (buf', needed) = |
123 | let |
124 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' buf, Int32.fromInt len) |
125 | in |
126 | if r = 0 then |
127 | (cleanup (); NONE) |
128 | else if r < 0 then |
129 | (cleanup (); |
130 | ssl_err "BIO_read"; |
131 | raise OpenSSL "BIO_read failed") |
132 | else if r = needed then |
133 | SOME (CharVector.tabulate (Int32.toInt needed, |
134 | fn i => chr (Word32.toInt (C.Get.uchar' |
135 | (C.Ptr.sub' C.S.uchar (buf, i)))))) |
136 | else |
137 | loop (C.Ptr.|+! C.S.uchar (buf', Int32.toInt r), needed - r) |
138 | end |
139 | in |
140 | loop (buf, Int32.fromInt len) |
141 | before cleanup () |
142 | end |
143 | |
144 | fun readChunk bio = |
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145 | let |
146 | val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, bufSize) |
147 | in |
148 | if r = 0 then |
149 | NONE |
150 | else if r < 0 then |
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151 | (ssl_err "BIO_read"; |
152 | raise OpenSSL "BIO_read failed") |
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153 | else |
154 | SOME (CharVector.tabulate (Int32.toInt r, |
155 | fn i => chr (Word32.toInt (C.Get.uchar' |
156 | (C.Ptr.sub' C.S.uchar (readBuf, i)))))) |
157 | end |
158 | |
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159 | fun readString bio = |
160 | case readInt bio of |
161 | NONE => NONE |
162 | | SOME len => readLen (bio, len) |
163 | |
164 | fun writeChar (bio, ch) = |
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165 | let |
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166 | val _ = C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0), |
167 | Word32.fromInt (ord ch)) |
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168 | |
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169 | fun trier () = |
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170 | let |
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171 | val r = F_OpenSSL_SML_write.f' (bio, C.Ptr.inject' readBuf, one) |
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172 | in |
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173 | if r = 0 then |
174 | trier () |
175 | else if r < 0 then |
176 | (ssl_err "BIO_write"; |
177 | raise OpenSSL "BIO_write") |
178 | else |
179 | () |
180 | end |
181 | in |
182 | trier () |
183 | end |
184 | |
185 | fun writeInt (bio, n) = |
186 | let |
187 | val w = Word32.fromInt n |
188 | |
189 | val _ = (C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 0), |
190 | Word32.andb (w, mask1)); |
191 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 1), |
192 | Word32.andb (Word32.>> (w, eight), mask1)); |
193 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 2), |
194 | Word32.andb (Word32.>> (w, sixteen), mask1)); |
195 | C.Set.uchar' (C.Ptr.sub' C.S.uchar (readBuf, 3), |
196 | Word32.andb (Word32.>> (w, twentyfour), mask1))) |
197 | |
198 | fun trier (buf, count) = |
199 | let |
200 | val r = F_OpenSSL_SML_write.f' (bio, C.Ptr.inject' buf, count) |
201 | in |
202 | if r < 0 then |
203 | (ssl_err "BIO_write"; |
204 | raise OpenSSL "BIO_write") |
205 | else if r = count then |
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206 | () |
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207 | else |
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208 | trier (C.Ptr.|+! C.S.uchar (buf, Int32.toInt r), count - r) |
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209 | end |
210 | in |
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211 | trier (readBuf, 4) |
212 | end |
213 | |
214 | fun writeString' (bio, s) = |
215 | let |
216 | val buf = ZString.dupML' s |
217 | in |
218 | if F_OpenSSL_SML_puts.f' (bio, buf) <= 0 then |
219 | (C.free' buf; |
220 | ssl_err "BIO_puts"; |
221 | raise OpenSSL "BIO_puts") |
222 | else |
223 | C.free' buf |
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224 | end |
225 | |
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226 | fun writeString (bio, s) = |
227 | (writeInt (bio, size s); |
228 | writeString' (bio, s)) |
229 | |
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230 | fun context (chain, key, root) = |
231 | let |
232 | val context = F_OpenSSL_SML_CTX_new.f' (F_OpenSSL_SML_SSLv23_method.f' ()) |
233 | in |
234 | if C.Ptr.isNull' context then |
235 | (ssl_err "Error creating SSL context"; |
236 | raise OpenSSL "Can't create SSL context") |
237 | else if F_OpenSSL_SML_use_certificate_chain_file.f' (context, |
238 | ZString.dupML' chain) |
239 | = 0 then |
240 | (ssl_err "Error using certificate chain"; |
241 | F_OpenSSL_SML_CTX_free.f' context; |
242 | raise OpenSSL "Can't load certificate chain") |
243 | else if F_OpenSSL_SML_use_PrivateKey_file.f' (context, |
244 | ZString.dupML' key) |
245 | = 0 then |
246 | (ssl_err "Error using private key"; |
247 | F_OpenSSL_SML_CTX_free.f' context; |
248 | raise OpenSSL "Can't load private key") |
249 | else if F_OpenSSL_SML_load_verify_locations.f' (context, |
250 | ZString.dupML' root, |
251 | C.Ptr.null') = 0 then |
252 | (ssl_err "Error loading trust store"; |
253 | F_OpenSSL_SML_CTX_free.f' context; |
254 | raise OpenSSL "Can't load trust store") |
255 | else |
256 | context |
257 | end |
258 | |
259 | fun connect (context, hostname) = |
260 | let |
261 | val bio = F_OpenSSL_SML_new_ssl_connect.f' context |
262 | in |
263 | if C.Ptr.isNull' bio then |
264 | (ssl_err ("Error initializating connection to " ^ hostname); |
265 | F_OpenSSL_SML_free_all.f' bio; |
266 | raise OpenSSL "Can't initialize connection") |
267 | else if F_OpenSSL_SML_set_conn_hostname.f' (bio, ZString.dupML' hostname) = 0 then |
268 | (ssl_err ("Error setting hostname: " ^ hostname); |
269 | F_OpenSSL_SML_free_all.f' bio; |
270 | raise OpenSSL "Can't set hostname") |
271 | else if F_OpenSSL_SML_do_connect.f' bio <= 0 then |
272 | (ssl_err ("Error connecting to " ^ hostname); |
273 | F_OpenSSL_SML_free_all.f' bio; |
274 | raise OpenSSL "Can't connect") |
275 | else |
276 | bio |
277 | end |
278 | |
279 | fun close bio = F_OpenSSL_SML_free_all.f' bio |
280 | |
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281 | fun listen (context, port) = |
282 | let |
283 | val port = ZString.dupML' (Int.toString port) |
284 | val listener = F_OpenSSL_SML_new_accept.f' (context, port) |
285 | in |
286 | C.free' port; |
287 | if C.Ptr.isNull' listener then |
288 | (ssl_err "Null listener"; |
289 | raise OpenSSL "Null listener") |
290 | else if F_OpenSSL_SML_do_accept.f' listener <= 0 then |
291 | (ssl_err "Error initializing listener"; |
292 | close listener; |
293 | raise OpenSSL "Can't initialize listener") |
294 | else |
295 | listener |
296 | end |
297 | |
298 | val shutdown = close |
299 | |
300 | fun accept listener = |
301 | if F_OpenSSL_SML_do_accept.f' listener <= 0 then |
302 | NONE |
303 | else |
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304 | let |
305 | val bio = F_OpenSSL_SML_pop.f' listener |
306 | in |
307 | if C.Ptr.isNull' bio then |
308 | (ssl_err "Null accepted"; |
309 | raise OpenSSL "Null accepted") |
310 | else if F_OpenSSL_SML_do_handshake.f' bio <= 0 then |
311 | (ssl_err "Handshake failed"; |
312 | raise OpenSSL "Handshake failed") |
313 | else |
314 | SOME bio |
315 | end |
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316 | |
317 | fun peerCN bio = |
318 | let |
319 | val ssl = F_OpenSSL_SML_get_ssl.f' bio |
320 | val _ = if C.Ptr.isNull' ssl then |
321 | raise OpenSSL "Null SSL" |
322 | else |
323 | () |
324 | val subj = F_OpenSSL_SML_get_peer_name.f' ssl |
325 | in |
326 | if C.Ptr.isNull' subj then |
327 | raise OpenSSL "Null CN result" |
328 | else |
329 | ZString.toML' subj |
330 | end |
331 | |
332 | end |