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-rw-r--r--src/lib/libcrypto/ocsp/ocsp_ht.c472
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diff --git a/src/lib/libcrypto/ocsp/ocsp_ht.c b/src/lib/libcrypto/ocsp/ocsp_ht.c
deleted file mode 100644
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--- a/src/lib/libcrypto/ocsp/ocsp_ht.c
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1/* ocsp_ht.c */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2006.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <ctype.h>
62#include <string.h>
63#include "e_os.h"
64#include <openssl/asn1.h>
65#include <openssl/ocsp.h>
66#include <openssl/err.h>
67#include <openssl/buffer.h>
68#ifdef OPENSSL_SYS_SUNOS
69#define strtoul (unsigned long)strtol
70#endif /* OPENSSL_SYS_SUNOS */
71
72/* Stateful OCSP request code, supporting non-blocking I/O */
73
74/* Opaque OCSP request status structure */
75
76struct ocsp_req_ctx_st {
77 int state; /* Current I/O state */
78 unsigned char *iobuf; /* Line buffer */
79 int iobuflen; /* Line buffer length */
80 BIO *io; /* BIO to perform I/O with */
81 BIO *mem; /* Memory BIO response is built into */
82 unsigned long asn1_len; /* ASN1 length of response */
83 };
84
85#define OCSP_MAX_REQUEST_LENGTH (100 * 1024)
86#define OCSP_MAX_LINE_LEN 4096;
87
88/* OCSP states */
89
90/* If set no reading should be performed */
91#define OHS_NOREAD 0x1000
92/* Error condition */
93#define OHS_ERROR (0 | OHS_NOREAD)
94/* First line being read */
95#define OHS_FIRSTLINE 1
96/* MIME headers being read */
97#define OHS_HEADERS 2
98/* OCSP initial header (tag + length) being read */
99#define OHS_ASN1_HEADER 3
100/* OCSP content octets being read */
101#define OHS_ASN1_CONTENT 4
102/* Request being sent */
103#define OHS_ASN1_WRITE (6 | OHS_NOREAD)
104/* Request being flushed */
105#define OHS_ASN1_FLUSH (7 | OHS_NOREAD)
106/* Completed */
107#define OHS_DONE (8 | OHS_NOREAD)
108
109
110static int parse_http_line1(char *line);
111
112void OCSP_REQ_CTX_free(OCSP_REQ_CTX *rctx)
113 {
114 if (rctx->mem)
115 BIO_free(rctx->mem);
116 if (rctx->iobuf)
117 OPENSSL_free(rctx->iobuf);
118 OPENSSL_free(rctx);
119 }
120
121OCSP_REQ_CTX *OCSP_sendreq_new(BIO *io, char *path, OCSP_REQUEST *req,
122 int maxline)
123 {
124 static char post_hdr[] = "POST %s HTTP/1.0\r\n"
125 "Content-Type: application/ocsp-request\r\n"
126 "Content-Length: %d\r\n\r\n";
127
128 OCSP_REQ_CTX *rctx;
129 rctx = OPENSSL_malloc(sizeof(OCSP_REQ_CTX));
130 rctx->state = OHS_FIRSTLINE;
131 rctx->mem = BIO_new(BIO_s_mem());
132 rctx->io = io;
133 if (maxline > 0)
134 rctx->iobuflen = maxline;
135 else
136 rctx->iobuflen = OCSP_MAX_LINE_LEN;
137 rctx->iobuf = OPENSSL_malloc(rctx->iobuflen);
138 if (!path)
139 path = "/";
140
141 if (BIO_printf(rctx->mem, post_hdr, path,
142 i2d_OCSP_REQUEST(req, NULL)) <= 0)
143 {
144 rctx->state = OHS_ERROR;
145 return 0;
146 }
147 if (i2d_OCSP_REQUEST_bio(rctx->mem, req) <= 0)
148 {
149 rctx->state = OHS_ERROR;
150 return 0;
151 }
152 rctx->state = OHS_ASN1_WRITE;
153 rctx->asn1_len = BIO_get_mem_data(rctx->mem, NULL);
154
155 return rctx;
156 }
157
158/* Parse the HTTP response. This will look like this:
159 * "HTTP/1.0 200 OK". We need to obtain the numeric code and
160 * (optional) informational message.
161 */
162
163static int parse_http_line1(char *line)
164 {
165 int retcode;
166 char *p, *q, *r;
167 /* Skip to first white space (passed protocol info) */
168
169 for(p = line; *p && !isspace((unsigned char)*p); p++)
170 continue;
171 if(!*p)
172 {
173 OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
174 OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
175 return 0;
176 }
177
178 /* Skip past white space to start of response code */
179 while(*p && isspace((unsigned char)*p))
180 p++;
181
182 if(!*p)
183 {
184 OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
185 OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
186 return 0;
187 }
188
189 /* Find end of response code: first whitespace after start of code */
190 for(q = p; *q && !isspace((unsigned char)*q); q++)
191 continue;
192
193 if(!*q)
194 {
195 OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
196 OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
197 return 0;
198 }
199
200 /* Set end of response code and start of message */
201 *q++ = 0;
202
203 /* Attempt to parse numeric code */
204 retcode = strtoul(p, &r, 10);
205
206 if(*r)
207 return 0;
208
209 /* Skip over any leading white space in message */
210 while(*q && isspace((unsigned char)*q))
211 q++;
212
213 if(*q)
214 {
215 /* Finally zap any trailing white space in message (include
216 * CRLF) */
217
218 /* We know q has a non white space character so this is OK */
219 for(r = q + strlen(q) - 1; isspace((unsigned char)*r); r--)
220 *r = 0;
221 }
222 if(retcode != 200)
223 {
224 OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_ERROR);
225 if(!*q)
226 ERR_add_error_data(2, "Code=", p);
227 else
228 ERR_add_error_data(4, "Code=", p, ",Reason=", q);
229 return 0;
230 }
231
232
233 return 1;
234
235 }
236
237int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx)
238 {
239 int i, n;
240 const unsigned char *p;
241 next_io:
242 if (!(rctx->state & OHS_NOREAD))
243 {
244 n = BIO_read(rctx->io, rctx->iobuf, rctx->iobuflen);
245
246 if (n <= 0)
247 {
248 if (BIO_should_retry(rctx->io))
249 return -1;
250 return 0;
251 }
252
253 /* Write data to memory BIO */
254
255 if (BIO_write(rctx->mem, rctx->iobuf, n) != n)
256 return 0;
257 }
258
259 switch(rctx->state)
260 {
261
262 case OHS_ASN1_WRITE:
263 n = BIO_get_mem_data(rctx->mem, &p);
264
265 i = BIO_write(rctx->io,
266 p + (n - rctx->asn1_len), rctx->asn1_len);
267
268 if (i <= 0)
269 {
270 if (BIO_should_retry(rctx->io))
271 return -1;
272 rctx->state = OHS_ERROR;
273 return 0;
274 }
275
276 rctx->asn1_len -= i;
277
278 if (rctx->asn1_len > 0)
279 goto next_io;
280
281 rctx->state = OHS_ASN1_FLUSH;
282
283 (void)BIO_reset(rctx->mem);
284
285 case OHS_ASN1_FLUSH:
286
287 i = BIO_flush(rctx->io);
288
289 if (i > 0)
290 {
291 rctx->state = OHS_FIRSTLINE;
292 goto next_io;
293 }
294
295 if (BIO_should_retry(rctx->io))
296 return -1;
297
298 rctx->state = OHS_ERROR;
299 return 0;
300
301 case OHS_ERROR:
302 return 0;
303
304 case OHS_FIRSTLINE:
305 case OHS_HEADERS:
306
307 /* Attempt to read a line in */
308
309 next_line:
310 /* Due to &%^*$" memory BIO behaviour with BIO_gets we
311 * have to check there's a complete line in there before
312 * calling BIO_gets or we'll just get a partial read.
313 */
314 n = BIO_get_mem_data(rctx->mem, &p);
315 if ((n <= 0) || !memchr(p, '\n', n))
316 {
317 if (n >= rctx->iobuflen)
318 {
319 rctx->state = OHS_ERROR;
320 return 0;
321 }
322 goto next_io;
323 }
324 n = BIO_gets(rctx->mem, (char *)rctx->iobuf, rctx->iobuflen);
325
326 if (n <= 0)
327 {
328 if (BIO_should_retry(rctx->mem))
329 goto next_io;
330 rctx->state = OHS_ERROR;
331 return 0;
332 }
333
334 /* Don't allow excessive lines */
335 if (n == rctx->iobuflen)
336 {
337 rctx->state = OHS_ERROR;
338 return 0;
339 }
340
341 /* First line */
342 if (rctx->state == OHS_FIRSTLINE)
343 {
344 if (parse_http_line1((char *)rctx->iobuf))
345 {
346 rctx->state = OHS_HEADERS;
347 goto next_line;
348 }
349 else
350 {
351 rctx->state = OHS_ERROR;
352 return 0;
353 }
354 }
355 else
356 {
357 /* Look for blank line: end of headers */
358 for (p = rctx->iobuf; *p; p++)
359 {
360 if ((*p != '\r') && (*p != '\n'))
361 break;
362 }
363 if (*p)
364 goto next_line;
365
366 rctx->state = OHS_ASN1_HEADER;
367
368 }
369
370 /* Fall thru */
371
372
373 case OHS_ASN1_HEADER:
374 /* Now reading ASN1 header: can read at least 6 bytes which
375 * is more than enough for any valid ASN1 SEQUENCE header
376 */
377 n = BIO_get_mem_data(rctx->mem, &p);
378 if (n < 6)
379 goto next_io;
380
381 /* Check it is an ASN1 SEQUENCE */
382 if (*p++ != (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED))
383 {
384 rctx->state = OHS_ERROR;
385 return 0;
386 }
387
388 /* Check out length field */
389 if (*p & 0x80)
390 {
391 n = *p & 0x7F;
392 /* Not NDEF or excessive length */
393 if (!n || (n > 4))
394 {
395 rctx->state = OHS_ERROR;
396 return 0;
397 }
398 p++;
399 rctx->asn1_len = 0;
400 for (i = 0; i < n; i++)
401 {
402 rctx->asn1_len <<= 8;
403 rctx->asn1_len |= *p++;
404 }
405
406 if (rctx->asn1_len > OCSP_MAX_REQUEST_LENGTH)
407 {
408 rctx->state = OHS_ERROR;
409 return 0;
410 }
411
412 rctx->asn1_len += n + 2;
413 }
414 else
415 rctx->asn1_len = *p + 2;
416
417 rctx->state = OHS_ASN1_CONTENT;
418
419 /* Fall thru */
420
421 case OHS_ASN1_CONTENT:
422 n = BIO_get_mem_data(rctx->mem, &p);
423 if (n < (int)rctx->asn1_len)
424 goto next_io;
425
426
427 *presp = d2i_OCSP_RESPONSE(NULL, &p, rctx->asn1_len);
428 if (*presp)
429 {
430 rctx->state = OHS_DONE;
431 return 1;
432 }
433
434 rctx->state = OHS_ERROR;
435 return 0;
436
437 break;
438
439 case OHS_DONE:
440 return 1;
441
442 }
443
444
445
446 return 0;
447
448
449 }
450
451/* Blocking OCSP request handler: now a special case of non-blocking I/O */
452
453OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, char *path, OCSP_REQUEST *req)
454 {
455 OCSP_RESPONSE *resp = NULL;
456 OCSP_REQ_CTX *ctx;
457 int rv;
458
459 ctx = OCSP_sendreq_new(b, path, req, -1);
460
461 do
462 {
463 rv = OCSP_sendreq_nbio(&resp, ctx);
464 } while ((rv == -1) && BIO_should_retry(b));
465
466 OCSP_REQ_CTX_free(ctx);
467
468 if (rv)
469 return resp;
470
471 return NULL;
472 }
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