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-rw-r--r--src/lib/libcrypto/pkcs7/pk7_mime.c722
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diff --git a/src/lib/libcrypto/pkcs7/pk7_mime.c b/src/lib/libcrypto/pkcs7/pk7_mime.c
deleted file mode 100644
index bf190360d7..0000000000
--- a/src/lib/libcrypto/pkcs7/pk7_mime.c
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@@ -1,722 +0,0 @@
1/* pk7_mime.c */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2005 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 <ctype.h>
61#include "cryptlib.h"
62#include <openssl/rand.h>
63#include <openssl/x509.h>
64
65/* MIME and related routines */
66
67/* MIME format structures
68 * Note that all are translated to lower case apart from
69 * parameter values. Quotes are stripped off
70 */
71
72typedef struct {
73char *param_name; /* Param name e.g. "micalg" */
74char *param_value; /* Param value e.g. "sha1" */
75} MIME_PARAM;
76
77DECLARE_STACK_OF(MIME_PARAM)
78IMPLEMENT_STACK_OF(MIME_PARAM)
79
80typedef struct {
81char *name; /* Name of line e.g. "content-type" */
82char *value; /* Value of line e.g. "text/plain" */
83STACK_OF(MIME_PARAM) *params; /* Zero or more parameters */
84} MIME_HEADER;
85
86DECLARE_STACK_OF(MIME_HEADER)
87IMPLEMENT_STACK_OF(MIME_HEADER)
88
89static int pkcs7_output_data(BIO *bio, BIO *data, PKCS7 *p7, int flags);
90static int B64_write_PKCS7(BIO *bio, PKCS7 *p7);
91static PKCS7 *B64_read_PKCS7(BIO *bio);
92static char * strip_ends(char *name);
93static char * strip_start(char *name);
94static char * strip_end(char *name);
95static MIME_HEADER *mime_hdr_new(char *name, char *value);
96static int mime_hdr_addparam(MIME_HEADER *mhdr, char *name, char *value);
97static STACK_OF(MIME_HEADER) *mime_parse_hdr(BIO *bio);
98static int mime_hdr_cmp(const MIME_HEADER * const *a,
99 const MIME_HEADER * const *b);
100static int mime_param_cmp(const MIME_PARAM * const *a,
101 const MIME_PARAM * const *b);
102static void mime_param_free(MIME_PARAM *param);
103static int mime_bound_check(char *line, int linelen, char *bound, int blen);
104static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret);
105static int strip_eol(char *linebuf, int *plen);
106static MIME_HEADER *mime_hdr_find(STACK_OF(MIME_HEADER) *hdrs, char *name);
107static MIME_PARAM *mime_param_find(MIME_HEADER *hdr, char *name);
108static void mime_hdr_free(MIME_HEADER *hdr);
109
110#define MAX_SMLEN 1024
111#define mime_debug(x) /* x */
112
113/* Base 64 read and write of PKCS#7 structure */
114
115static int B64_write_PKCS7(BIO *bio, PKCS7 *p7)
116{
117 BIO *b64;
118 if(!(b64 = BIO_new(BIO_f_base64()))) {
119 PKCS7err(PKCS7_F_B64_WRITE_PKCS7,ERR_R_MALLOC_FAILURE);
120 return 0;
121 }
122 bio = BIO_push(b64, bio);
123 i2d_PKCS7_bio(bio, p7);
124 (void)BIO_flush(bio);
125 bio = BIO_pop(bio);
126 BIO_free(b64);
127 return 1;
128}
129
130static PKCS7 *B64_read_PKCS7(BIO *bio)
131{
132 BIO *b64;
133 PKCS7 *p7;
134 if(!(b64 = BIO_new(BIO_f_base64()))) {
135 PKCS7err(PKCS7_F_B64_READ_PKCS7,ERR_R_MALLOC_FAILURE);
136 return 0;
137 }
138 bio = BIO_push(b64, bio);
139 if(!(p7 = d2i_PKCS7_bio(bio, NULL)))
140 PKCS7err(PKCS7_F_B64_READ_PKCS7,PKCS7_R_DECODE_ERROR);
141 (void)BIO_flush(bio);
142 bio = BIO_pop(bio);
143 BIO_free(b64);
144 return p7;
145}
146
147/* SMIME sender */
148
149int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
150{
151 char bound[33], c;
152 int i;
153 char *mime_prefix, *mime_eol, *msg_type=NULL;
154 if (flags & PKCS7_NOOLDMIMETYPE)
155 mime_prefix = "application/pkcs7-";
156 else
157 mime_prefix = "application/x-pkcs7-";
158
159 if (flags & PKCS7_CRLFEOL)
160 mime_eol = "\r\n";
161 else
162 mime_eol = "\n";
163 if((flags & PKCS7_DETACHED) && data) {
164 /* We want multipart/signed */
165 /* Generate a random boundary */
166 RAND_pseudo_bytes((unsigned char *)bound, 32);
167 for(i = 0; i < 32; i++) {
168 c = bound[i] & 0xf;
169 if(c < 10) c += '0';
170 else c += 'A' - 10;
171 bound[i] = c;
172 }
173 bound[32] = 0;
174 BIO_printf(bio, "MIME-Version: 1.0%s", mime_eol);
175 BIO_printf(bio, "Content-Type: multipart/signed;");
176 BIO_printf(bio, " protocol=\"%ssignature\";", mime_prefix);
177 BIO_printf(bio, " micalg=sha1; boundary=\"----%s\"%s%s",
178 bound, mime_eol, mime_eol);
179 BIO_printf(bio, "This is an S/MIME signed message%s%s",
180 mime_eol, mime_eol);
181 /* Now write out the first part */
182 BIO_printf(bio, "------%s%s", bound, mime_eol);
183 pkcs7_output_data(bio, data, p7, flags);
184 BIO_printf(bio, "%s------%s%s", mime_eol, bound, mime_eol);
185
186 /* Headers for signature */
187
188 BIO_printf(bio, "Content-Type: %ssignature;", mime_prefix);
189 BIO_printf(bio, " name=\"smime.p7s\"%s", mime_eol);
190 BIO_printf(bio, "Content-Transfer-Encoding: base64%s",
191 mime_eol);
192 BIO_printf(bio, "Content-Disposition: attachment;");
193 BIO_printf(bio, " filename=\"smime.p7s\"%s%s",
194 mime_eol, mime_eol);
195 B64_write_PKCS7(bio, p7);
196 BIO_printf(bio,"%s------%s--%s%s", mime_eol, bound,
197 mime_eol, mime_eol);
198 return 1;
199 }
200
201 /* Determine smime-type header */
202
203 if (PKCS7_type_is_enveloped(p7))
204 msg_type = "enveloped-data";
205 else if (PKCS7_type_is_signed(p7))
206 {
207 /* If we have any signers it is signed-data othewise
208 * certs-only.
209 */
210 STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
211 sinfos = PKCS7_get_signer_info(p7);
212 if (sk_PKCS7_SIGNER_INFO_num(sinfos) > 0)
213 msg_type = "signed-data";
214 else
215 msg_type = "certs-only";
216 }
217 /* MIME headers */
218 BIO_printf(bio, "MIME-Version: 1.0%s", mime_eol);
219 BIO_printf(bio, "Content-Disposition: attachment;");
220 BIO_printf(bio, " filename=\"smime.p7m\"%s", mime_eol);
221 BIO_printf(bio, "Content-Type: %smime;", mime_prefix);
222 if (msg_type)
223 BIO_printf(bio, " smime-type=%s;", msg_type);
224 BIO_printf(bio, " name=\"smime.p7m\"%s", mime_eol);
225 BIO_printf(bio, "Content-Transfer-Encoding: base64%s%s",
226 mime_eol, mime_eol);
227 B64_write_PKCS7(bio, p7);
228 BIO_printf(bio, "%s", mime_eol);
229 return 1;
230}
231
232/* Handle output of PKCS#7 data */
233
234
235static int pkcs7_output_data(BIO *out, BIO *data, PKCS7 *p7, int flags)
236 {
237 BIO *tmpbio, *p7bio;
238
239 if (!(flags & PKCS7_STREAM))
240 {
241 SMIME_crlf_copy(data, out, flags);
242 return 1;
243 }
244
245 /* Partial sign operation */
246
247 /* Initialize sign operation */
248 p7bio = PKCS7_dataInit(p7, out);
249
250 /* Copy data across, computing digests etc */
251 SMIME_crlf_copy(data, p7bio, flags);
252
253 /* Must be detached */
254 PKCS7_set_detached(p7, 1);
255
256 /* Finalize signatures */
257 PKCS7_dataFinal(p7, p7bio);
258
259 /* Now remove any digests prepended to the BIO */
260
261 while (p7bio != out)
262 {
263 tmpbio = BIO_pop(p7bio);
264 BIO_free(p7bio);
265 p7bio = tmpbio;
266 }
267
268 return 1;
269
270 }
271
272/* SMIME reader: handle multipart/signed and opaque signing.
273 * in multipart case the content is placed in a memory BIO
274 * pointed to by "bcont". In opaque this is set to NULL
275 */
276
277PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont)
278{
279 BIO *p7in;
280 STACK_OF(MIME_HEADER) *headers = NULL;
281 STACK_OF(BIO) *parts = NULL;
282 MIME_HEADER *hdr;
283 MIME_PARAM *prm;
284 PKCS7 *p7;
285 int ret;
286
287 if(bcont) *bcont = NULL;
288
289 if (!(headers = mime_parse_hdr(bio))) {
290 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_MIME_PARSE_ERROR);
291 return NULL;
292 }
293
294 if(!(hdr = mime_hdr_find(headers, "content-type")) || !hdr->value) {
295 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
296 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_CONTENT_TYPE);
297 return NULL;
298 }
299
300 /* Handle multipart/signed */
301
302 if(!strcmp(hdr->value, "multipart/signed")) {
303 /* Split into two parts */
304 prm = mime_param_find(hdr, "boundary");
305 if(!prm || !prm->param_value) {
306 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
307 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_MULTIPART_BOUNDARY);
308 return NULL;
309 }
310 ret = multi_split(bio, prm->param_value, &parts);
311 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
312 if(!ret || (sk_BIO_num(parts) != 2) ) {
313 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_MULTIPART_BODY_FAILURE);
314 sk_BIO_pop_free(parts, BIO_vfree);
315 return NULL;
316 }
317
318 /* Parse the signature piece */
319 p7in = sk_BIO_value(parts, 1);
320
321 if (!(headers = mime_parse_hdr(p7in))) {
322 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_MIME_SIG_PARSE_ERROR);
323 sk_BIO_pop_free(parts, BIO_vfree);
324 return NULL;
325 }
326
327 /* Get content type */
328
329 if(!(hdr = mime_hdr_find(headers, "content-type")) ||
330 !hdr->value) {
331 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
332 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_SIG_CONTENT_TYPE);
333 return NULL;
334 }
335
336 if(strcmp(hdr->value, "application/x-pkcs7-signature") &&
337 strcmp(hdr->value, "application/pkcs7-signature")) {
338 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
339 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_SIG_INVALID_MIME_TYPE);
340 ERR_add_error_data(2, "type: ", hdr->value);
341 sk_BIO_pop_free(parts, BIO_vfree);
342 return NULL;
343 }
344 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
345 /* Read in PKCS#7 */
346 if(!(p7 = B64_read_PKCS7(p7in))) {
347 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_PKCS7_SIG_PARSE_ERROR);
348 sk_BIO_pop_free(parts, BIO_vfree);
349 return NULL;
350 }
351
352 if(bcont) {
353 *bcont = sk_BIO_value(parts, 0);
354 BIO_free(p7in);
355 sk_BIO_free(parts);
356 } else sk_BIO_pop_free(parts, BIO_vfree);
357 return p7;
358 }
359
360 /* OK, if not multipart/signed try opaque signature */
361
362 if (strcmp (hdr->value, "application/x-pkcs7-mime") &&
363 strcmp (hdr->value, "application/pkcs7-mime")) {
364 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_INVALID_MIME_TYPE);
365 ERR_add_error_data(2, "type: ", hdr->value);
366 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
367 return NULL;
368 }
369
370 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
371
372 if(!(p7 = B64_read_PKCS7(bio))) {
373 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_PKCS7_PARSE_ERROR);
374 return NULL;
375 }
376 return p7;
377
378}
379
380/* Split a multipart/XXX message body into component parts: result is
381 * canonical parts in a STACK of bios
382 */
383
384static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
385{
386 char linebuf[MAX_SMLEN];
387 int len, blen;
388 int eol = 0, next_eol = 0;
389 BIO *bpart = NULL;
390 STACK_OF(BIO) *parts;
391 char state, part, first;
392
393 blen = strlen(bound);
394 part = 0;
395 state = 0;
396 first = 1;
397 parts = sk_BIO_new_null();
398 *ret = parts;
399 while ((len = BIO_gets(bio, linebuf, MAX_SMLEN)) > 0) {
400 state = mime_bound_check(linebuf, len, bound, blen);
401 if(state == 1) {
402 first = 1;
403 part++;
404 } else if(state == 2) {
405 sk_BIO_push(parts, bpart);
406 return 1;
407 } else if(part) {
408 /* Strip CR+LF from linebuf */
409 next_eol = strip_eol(linebuf, &len);
410 if(first) {
411 first = 0;
412 if(bpart) sk_BIO_push(parts, bpart);
413 bpart = BIO_new(BIO_s_mem());
414 BIO_set_mem_eof_return(bpart, 0);
415 } else if (eol)
416 BIO_write(bpart, "\r\n", 2);
417 eol = next_eol;
418 if (len)
419 BIO_write(bpart, linebuf, len);
420 }
421 }
422 return 0;
423}
424
425/* This is the big one: parse MIME header lines up to message body */
426
427#define MIME_INVALID 0
428#define MIME_START 1
429#define MIME_TYPE 2
430#define MIME_NAME 3
431#define MIME_VALUE 4
432#define MIME_QUOTE 5
433#define MIME_COMMENT 6
434
435
436static STACK_OF(MIME_HEADER) *mime_parse_hdr(BIO *bio)
437{
438 char *p, *q, c;
439 char *ntmp;
440 char linebuf[MAX_SMLEN];
441 MIME_HEADER *mhdr = NULL;
442 STACK_OF(MIME_HEADER) *headers;
443 int len, state, save_state = 0;
444
445 headers = sk_MIME_HEADER_new(mime_hdr_cmp);
446 while ((len = BIO_gets(bio, linebuf, MAX_SMLEN)) > 0) {
447 /* If whitespace at line start then continuation line */
448 if(mhdr && isspace((unsigned char)linebuf[0])) state = MIME_NAME;
449 else state = MIME_START;
450 ntmp = NULL;
451 /* Go through all characters */
452 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
453
454 /* State machine to handle MIME headers
455 * if this looks horrible that's because it *is*
456 */
457
458 switch(state) {
459 case MIME_START:
460 if(c == ':') {
461 state = MIME_TYPE;
462 *p = 0;
463 ntmp = strip_ends(q);
464 q = p + 1;
465 }
466 break;
467
468 case MIME_TYPE:
469 if(c == ';') {
470 mime_debug("Found End Value\n");
471 *p = 0;
472 mhdr = mime_hdr_new(ntmp, strip_ends(q));
473 sk_MIME_HEADER_push(headers, mhdr);
474 ntmp = NULL;
475 q = p + 1;
476 state = MIME_NAME;
477 } else if(c == '(') {
478 save_state = state;
479 state = MIME_COMMENT;
480 }
481 break;
482
483 case MIME_COMMENT:
484 if(c == ')') {
485 state = save_state;
486 }
487 break;
488
489 case MIME_NAME:
490 if(c == '=') {
491 state = MIME_VALUE;
492 *p = 0;
493 ntmp = strip_ends(q);
494 q = p + 1;
495 }
496 break ;
497
498 case MIME_VALUE:
499 if(c == ';') {
500 state = MIME_NAME;
501 *p = 0;
502 mime_hdr_addparam(mhdr, ntmp, strip_ends(q));
503 ntmp = NULL;
504 q = p + 1;
505 } else if (c == '"') {
506 mime_debug("Found Quote\n");
507 state = MIME_QUOTE;
508 } else if(c == '(') {
509 save_state = state;
510 state = MIME_COMMENT;
511 }
512 break;
513
514 case MIME_QUOTE:
515 if(c == '"') {
516 mime_debug("Found Match Quote\n");
517 state = MIME_VALUE;
518 }
519 break;
520 }
521 }
522
523 if(state == MIME_TYPE) {
524 mhdr = mime_hdr_new(ntmp, strip_ends(q));
525 sk_MIME_HEADER_push(headers, mhdr);
526 } else if(state == MIME_VALUE)
527 mime_hdr_addparam(mhdr, ntmp, strip_ends(q));
528 if(p == linebuf) break; /* Blank line means end of headers */
529}
530
531return headers;
532
533}
534
535static char *strip_ends(char *name)
536{
537 return strip_end(strip_start(name));
538}
539
540/* Strip a parameter of whitespace from start of param */
541static char *strip_start(char *name)
542{
543 char *p, c;
544 /* Look for first non white space or quote */
545 for(p = name; (c = *p) ;p++) {
546 if(c == '"') {
547 /* Next char is start of string if non null */
548 if(p[1]) return p + 1;
549 /* Else null string */
550 return NULL;
551 }
552 if(!isspace((unsigned char)c)) return p;
553 }
554 return NULL;
555}
556
557/* As above but strip from end of string : maybe should handle brackets? */
558static char *strip_end(char *name)
559{
560 char *p, c;
561 if(!name) return NULL;
562 /* Look for first non white space or quote */
563 for(p = name + strlen(name) - 1; p >= name ;p--) {
564 c = *p;
565 if(c == '"') {
566 if(p - 1 == name) return NULL;
567 *p = 0;
568 return name;
569 }
570 if(isspace((unsigned char)c)) *p = 0;
571 else return name;
572 }
573 return NULL;
574}
575
576static MIME_HEADER *mime_hdr_new(char *name, char *value)
577{
578 MIME_HEADER *mhdr;
579 char *tmpname, *tmpval, *p;
580 int c;
581 if(name) {
582 if(!(tmpname = BUF_strdup(name))) return NULL;
583 for(p = tmpname ; *p; p++) {
584 c = *p;
585 if(isupper(c)) {
586 c = tolower(c);
587 *p = c;
588 }
589 }
590 } else tmpname = NULL;
591 if(value) {
592 if(!(tmpval = BUF_strdup(value))) return NULL;
593 for(p = tmpval ; *p; p++) {
594 c = *p;
595 if(isupper(c)) {
596 c = tolower(c);
597 *p = c;
598 }
599 }
600 } else tmpval = NULL;
601 mhdr = (MIME_HEADER *) OPENSSL_malloc(sizeof(MIME_HEADER));
602 if(!mhdr) return NULL;
603 mhdr->name = tmpname;
604 mhdr->value = tmpval;
605 if(!(mhdr->params = sk_MIME_PARAM_new(mime_param_cmp))) return NULL;
606 return mhdr;
607}
608
609static int mime_hdr_addparam(MIME_HEADER *mhdr, char *name, char *value)
610{
611 char *tmpname, *tmpval, *p;
612 int c;
613 MIME_PARAM *mparam;
614 if(name) {
615 tmpname = BUF_strdup(name);
616 if(!tmpname) return 0;
617 for(p = tmpname ; *p; p++) {
618 c = *p;
619 if(isupper(c)) {
620 c = tolower(c);
621 *p = c;
622 }
623 }
624 } else tmpname = NULL;
625 if(value) {
626 tmpval = BUF_strdup(value);
627 if(!tmpval) return 0;
628 } else tmpval = NULL;
629 /* Parameter values are case sensitive so leave as is */
630 mparam = (MIME_PARAM *) OPENSSL_malloc(sizeof(MIME_PARAM));
631 if(!mparam) return 0;
632 mparam->param_name = tmpname;
633 mparam->param_value = tmpval;
634 sk_MIME_PARAM_push(mhdr->params, mparam);
635 return 1;
636}
637
638static int mime_hdr_cmp(const MIME_HEADER * const *a,
639 const MIME_HEADER * const *b)
640{
641 return(strcmp((*a)->name, (*b)->name));
642}
643
644static int mime_param_cmp(const MIME_PARAM * const *a,
645 const MIME_PARAM * const *b)
646{
647 return(strcmp((*a)->param_name, (*b)->param_name));
648}
649
650/* Find a header with a given name (if possible) */
651
652static MIME_HEADER *mime_hdr_find(STACK_OF(MIME_HEADER) *hdrs, char *name)
653{
654 MIME_HEADER htmp;
655 int idx;
656 htmp.name = name;
657 idx = sk_MIME_HEADER_find(hdrs, &htmp);
658 if(idx < 0) return NULL;
659 return sk_MIME_HEADER_value(hdrs, idx);
660}
661
662static MIME_PARAM *mime_param_find(MIME_HEADER *hdr, char *name)
663{
664 MIME_PARAM param;
665 int idx;
666 param.param_name = name;
667 idx = sk_MIME_PARAM_find(hdr->params, &param);
668 if(idx < 0) return NULL;
669 return sk_MIME_PARAM_value(hdr->params, idx);
670}
671
672static void mime_hdr_free(MIME_HEADER *hdr)
673{
674 if(hdr->name) OPENSSL_free(hdr->name);
675 if(hdr->value) OPENSSL_free(hdr->value);
676 if(hdr->params) sk_MIME_PARAM_pop_free(hdr->params, mime_param_free);
677 OPENSSL_free(hdr);
678}
679
680static void mime_param_free(MIME_PARAM *param)
681{
682 if(param->param_name) OPENSSL_free(param->param_name);
683 if(param->param_value) OPENSSL_free(param->param_value);
684 OPENSSL_free(param);
685}
686
687/* Check for a multipart boundary. Returns:
688 * 0 : no boundary
689 * 1 : part boundary
690 * 2 : final boundary
691 */
692static int mime_bound_check(char *line, int linelen, char *bound, int blen)
693{
694 if(linelen == -1) linelen = strlen(line);
695 if(blen == -1) blen = strlen(bound);
696 /* Quickly eliminate if line length too short */
697 if(blen + 2 > linelen) return 0;
698 /* Check for part boundary */
699 if(!strncmp(line, "--", 2) && !strncmp(line + 2, bound, blen)) {
700 if(!strncmp(line + blen + 2, "--", 2)) return 2;
701 else return 1;
702 }
703 return 0;
704}
705
706static int strip_eol(char *linebuf, int *plen)
707 {
708 int len = *plen;
709 char *p, c;
710 int is_eol = 0;
711 p = linebuf + len - 1;
712 for (p = linebuf + len - 1; len > 0; len--, p--)
713 {
714 c = *p;
715 if (c == '\n')
716 is_eol = 1;
717 else if (c != '\r')
718 break;
719 }
720 *plen = len;
721 return is_eol;
722 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-03 04:01:11 +0000