3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 1999-2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
59 #include <openssl/rand.h>
60 #include <openssl/x509.h>
61 #include <openssl/asn1.h>
62 #include <openssl/asn1t.h>
63 #include "asn1_locl.h"
66 * Generalised MIME like utilities for streaming ASN1. Although many have a
67 * PKCS7/CMS like flavour others are more general purpose.
71 * MIME format structures Note that all are translated to lower case apart
72 * from parameter values. Quotes are stripped off
76 char *param_name
; /* Param name e.g. "micalg" */
77 char *param_value
; /* Param value e.g. "sha1" */
80 DECLARE_STACK_OF(MIME_PARAM
)
83 char *name
; /* Name of line e.g. "content-type" */
84 char *value
; /* Value of line e.g. "text/plain" */
85 STACK_OF(MIME_PARAM
) *params
; /* Zero or more parameters */
88 DECLARE_STACK_OF(MIME_HEADER
)
90 static int asn1_output_data(BIO
*out
, BIO
*data
, ASN1_VALUE
*val
, int flags
,
92 static char *strip_ends(char *name
);
93 static char *strip_start(char *name
);
94 static char *strip_end(char *name
);
95 static MIME_HEADER
*mime_hdr_new(char *name
, char *value
);
96 static int mime_hdr_addparam(MIME_HEADER
*mhdr
, char *name
, char *value
);
97 static STACK_OF(MIME_HEADER
) *mime_parse_hdr(BIO
*bio
);
98 static int mime_hdr_cmp(const MIME_HEADER
*const *a
,
99 const MIME_HEADER
*const *b
);
100 static int mime_param_cmp(const MIME_PARAM
*const *a
,
101 const MIME_PARAM
*const *b
);
102 static void mime_param_free(MIME_PARAM
*param
);
103 static int mime_bound_check(char *line
, int linelen
, char *bound
, int blen
);
104 static int multi_split(BIO
*bio
, char *bound
, STACK_OF(BIO
) **ret
);
105 static int strip_eol(char *linebuf
, int *plen
, int flags
);
106 static MIME_HEADER
*mime_hdr_find(STACK_OF(MIME_HEADER
) *hdrs
, char *name
);
107 static MIME_PARAM
*mime_param_find(MIME_HEADER
*hdr
, char *name
);
108 static void mime_hdr_free(MIME_HEADER
*hdr
);
110 #define MAX_SMLEN 1024
111 #define mime_debug(x) /* x */
113 /* Output an ASN1 structure in BER format streaming if necessary */
115 int i2d_ASN1_bio_stream(BIO
*out
, ASN1_VALUE
*val
, BIO
*in
, int flags
,
118 /* If streaming create stream BIO and copy all content through it */
119 if (flags
& SMIME_STREAM
) {
121 bio
= BIO_new_NDEF(out
, val
, it
);
123 ASN1err(ASN1_F_I2D_ASN1_BIO_STREAM
, ERR_R_MALLOC_FAILURE
);
126 SMIME_crlf_copy(in
, bio
, flags
);
127 (void)BIO_flush(bio
);
128 /* Free up successive BIOs until we hit the old output BIO */
133 } while (bio
!= out
);
136 * else just write out ASN1 structure which will have all content stored
140 ASN1_item_i2d_bio(it
, out
, val
);
144 /* Base 64 read and write of ASN1 structure */
146 static int B64_write_ASN1(BIO
*out
, ASN1_VALUE
*val
, BIO
*in
, int flags
,
151 b64
= BIO_new(BIO_f_base64());
153 ASN1err(ASN1_F_B64_WRITE_ASN1
, ERR_R_MALLOC_FAILURE
);
157 * prepend the b64 BIO so all data is base64 encoded.
159 out
= BIO_push(b64
, out
);
160 r
= i2d_ASN1_bio_stream(out
, val
, in
, flags
, it
);
161 (void)BIO_flush(out
);
167 /* Streaming ASN1 PEM write */
169 int PEM_write_bio_ASN1_stream(BIO
*out
, ASN1_VALUE
*val
, BIO
*in
, int flags
,
170 const char *hdr
, const ASN1_ITEM
*it
)
173 BIO_printf(out
, "-----BEGIN %s-----\n", hdr
);
174 r
= B64_write_ASN1(out
, val
, in
, flags
, it
);
175 BIO_printf(out
, "-----END %s-----\n", hdr
);
179 static ASN1_VALUE
*b64_read_asn1(BIO
*bio
, const ASN1_ITEM
*it
)
183 if (!(b64
= BIO_new(BIO_f_base64()))) {
184 ASN1err(ASN1_F_B64_READ_ASN1
, ERR_R_MALLOC_FAILURE
);
187 bio
= BIO_push(b64
, bio
);
188 val
= ASN1_item_d2i_bio(it
, bio
, NULL
);
190 ASN1err(ASN1_F_B64_READ_ASN1
, ASN1_R_DECODE_ERROR
);
191 (void)BIO_flush(bio
);
197 /* Generate the MIME "micalg" parameter from RFC3851, RFC4490 */
199 static int asn1_write_micalg(BIO
*out
, STACK_OF(X509_ALGOR
) *mdalgs
)
202 int i
, have_unknown
= 0, write_comma
, ret
= 0, md_nid
;
205 for (i
= 0; i
< sk_X509_ALGOR_num(mdalgs
); i
++) {
207 BIO_write(out
, ",", 1);
209 md_nid
= OBJ_obj2nid(sk_X509_ALGOR_value(mdalgs
, i
)->algorithm
);
210 md
= EVP_get_digestbynid(md_nid
);
211 if (md
&& md
->md_ctrl
) {
214 rv
= md
->md_ctrl(NULL
, EVP_MD_CTRL_MICALG
, 0, &micstr
);
216 BIO_puts(out
, micstr
);
217 OPENSSL_free(micstr
);
225 BIO_puts(out
, "sha1");
229 BIO_puts(out
, "md5");
233 BIO_puts(out
, "sha-256");
237 BIO_puts(out
, "sha-384");
241 BIO_puts(out
, "sha-512");
244 case NID_id_GostR3411_94
:
245 BIO_puts(out
, "gostr3411-94");
252 BIO_puts(out
, "unknown");
269 int SMIME_write_ASN1(BIO
*bio
, ASN1_VALUE
*val
, BIO
*data
, int flags
,
270 int ctype_nid
, int econt_nid
,
271 STACK_OF(X509_ALGOR
) *mdalgs
, const ASN1_ITEM
*it
)
275 const char *mime_prefix
, *mime_eol
, *cname
= "smime.p7m";
276 const char *msg_type
= NULL
;
277 if (flags
& SMIME_OLDMIME
)
278 mime_prefix
= "application/x-pkcs7-";
280 mime_prefix
= "application/pkcs7-";
282 if (flags
& SMIME_CRLFEOL
)
286 if ((flags
& SMIME_DETACHED
) && data
) {
287 /* We want multipart/signed */
288 /* Generate a random boundary */
289 if (RAND_bytes((unsigned char *)bound
, 32) <= 0)
291 for (i
= 0; i
< 32; i
++) {
300 BIO_printf(bio
, "MIME-Version: 1.0%s", mime_eol
);
301 BIO_printf(bio
, "Content-Type: multipart/signed;");
302 BIO_printf(bio
, " protocol=\"%ssignature\";", mime_prefix
);
303 BIO_puts(bio
, " micalg=\"");
304 asn1_write_micalg(bio
, mdalgs
);
305 BIO_printf(bio
, "\"; boundary=\"----%s\"%s%s",
306 bound
, mime_eol
, mime_eol
);
307 BIO_printf(bio
, "This is an S/MIME signed message%s%s",
309 /* Now write out the first part */
310 BIO_printf(bio
, "------%s%s", bound
, mime_eol
);
311 if (!asn1_output_data(bio
, data
, val
, flags
, it
))
313 BIO_printf(bio
, "%s------%s%s", mime_eol
, bound
, mime_eol
);
315 /* Headers for signature */
317 BIO_printf(bio
, "Content-Type: %ssignature;", mime_prefix
);
318 BIO_printf(bio
, " name=\"smime.p7s\"%s", mime_eol
);
319 BIO_printf(bio
, "Content-Transfer-Encoding: base64%s", mime_eol
);
320 BIO_printf(bio
, "Content-Disposition: attachment;");
321 BIO_printf(bio
, " filename=\"smime.p7s\"%s%s", mime_eol
, mime_eol
);
322 B64_write_ASN1(bio
, val
, NULL
, 0, it
);
323 BIO_printf(bio
, "%s------%s--%s%s", mime_eol
, bound
,
328 /* Determine smime-type header */
330 if (ctype_nid
== NID_pkcs7_enveloped
)
331 msg_type
= "enveloped-data";
332 else if (ctype_nid
== NID_pkcs7_signed
) {
333 if (econt_nid
== NID_id_smime_ct_receipt
)
334 msg_type
= "signed-receipt";
335 else if (sk_X509_ALGOR_num(mdalgs
) >= 0)
336 msg_type
= "signed-data";
338 msg_type
= "certs-only";
339 } else if (ctype_nid
== NID_id_smime_ct_compressedData
) {
340 msg_type
= "compressed-data";
344 BIO_printf(bio
, "MIME-Version: 1.0%s", mime_eol
);
345 BIO_printf(bio
, "Content-Disposition: attachment;");
346 BIO_printf(bio
, " filename=\"%s\"%s", cname
, mime_eol
);
347 BIO_printf(bio
, "Content-Type: %smime;", mime_prefix
);
349 BIO_printf(bio
, " smime-type=%s;", msg_type
);
350 BIO_printf(bio
, " name=\"%s\"%s", cname
, mime_eol
);
351 BIO_printf(bio
, "Content-Transfer-Encoding: base64%s%s",
353 if (!B64_write_ASN1(bio
, val
, data
, flags
, it
))
355 BIO_printf(bio
, "%s", mime_eol
);
359 /* Handle output of ASN1 data */
361 static int asn1_output_data(BIO
*out
, BIO
*data
, ASN1_VALUE
*val
, int flags
,
365 const ASN1_AUX
*aux
= it
->funcs
;
366 ASN1_STREAM_ARG sarg
;
370 * If data is not deteched or resigning then the output BIO is already
371 * set up to finalise when it is written through.
373 if (!(flags
& SMIME_DETACHED
) || (flags
& PKCS7_REUSE_DIGEST
)) {
374 SMIME_crlf_copy(data
, out
, flags
);
378 if (!aux
|| !aux
->asn1_cb
) {
379 ASN1err(ASN1_F_ASN1_OUTPUT_DATA
, ASN1_R_STREAMING_NOT_SUPPORTED
);
384 sarg
.ndef_bio
= NULL
;
385 sarg
.boundary
= NULL
;
387 /* Let ASN1 code prepend any needed BIOs */
389 if (aux
->asn1_cb(ASN1_OP_DETACHED_PRE
, &val
, it
, &sarg
) <= 0)
392 /* Copy data across, passing through filter BIOs for processing */
393 SMIME_crlf_copy(data
, sarg
.ndef_bio
, flags
);
395 /* Finalize structure */
396 if (aux
->asn1_cb(ASN1_OP_DETACHED_POST
, &val
, it
, &sarg
) <= 0)
399 /* Now remove any digests prepended to the BIO */
401 while (sarg
.ndef_bio
!= out
) {
402 tmpbio
= BIO_pop(sarg
.ndef_bio
);
403 BIO_free(sarg
.ndef_bio
);
404 sarg
.ndef_bio
= tmpbio
;
412 * SMIME reader: handle multipart/signed and opaque signing. in multipart
413 * case the content is placed in a memory BIO pointed to by "bcont". In
414 * opaque this is set to NULL
417 ASN1_VALUE
*SMIME_read_ASN1(BIO
*bio
, BIO
**bcont
, const ASN1_ITEM
*it
)
420 STACK_OF(MIME_HEADER
) *headers
= NULL
;
421 STACK_OF(BIO
) *parts
= NULL
;
430 if (!(headers
= mime_parse_hdr(bio
))) {
431 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_MIME_PARSE_ERROR
);
435 if (!(hdr
= mime_hdr_find(headers
, "content-type")) || !hdr
->value
) {
436 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
437 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_NO_CONTENT_TYPE
);
441 /* Handle multipart/signed */
443 if (!strcmp(hdr
->value
, "multipart/signed")) {
444 /* Split into two parts */
445 prm
= mime_param_find(hdr
, "boundary");
446 if (!prm
|| !prm
->param_value
) {
447 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
448 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_NO_MULTIPART_BOUNDARY
);
451 ret
= multi_split(bio
, prm
->param_value
, &parts
);
452 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
453 if (!ret
|| (sk_BIO_num(parts
) != 2)) {
454 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_NO_MULTIPART_BODY_FAILURE
);
455 sk_BIO_pop_free(parts
, BIO_vfree
);
459 /* Parse the signature piece */
460 asnin
= sk_BIO_value(parts
, 1);
462 if (!(headers
= mime_parse_hdr(asnin
))) {
463 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_MIME_SIG_PARSE_ERROR
);
464 sk_BIO_pop_free(parts
, BIO_vfree
);
468 /* Get content type */
470 if (!(hdr
= mime_hdr_find(headers
, "content-type")) || !hdr
->value
) {
471 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
472 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_NO_SIG_CONTENT_TYPE
);
476 if (strcmp(hdr
->value
, "application/x-pkcs7-signature") &&
477 strcmp(hdr
->value
, "application/pkcs7-signature")) {
478 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_SIG_INVALID_MIME_TYPE
);
479 ERR_add_error_data(2, "type: ", hdr
->value
);
480 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
481 sk_BIO_pop_free(parts
, BIO_vfree
);
484 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
486 if (!(val
= b64_read_asn1(asnin
, it
))) {
487 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_ASN1_SIG_PARSE_ERROR
);
488 sk_BIO_pop_free(parts
, BIO_vfree
);
493 *bcont
= sk_BIO_value(parts
, 0);
497 sk_BIO_pop_free(parts
, BIO_vfree
);
501 /* OK, if not multipart/signed try opaque signature */
503 if (strcmp(hdr
->value
, "application/x-pkcs7-mime") &&
504 strcmp(hdr
->value
, "application/pkcs7-mime")) {
505 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_INVALID_MIME_TYPE
);
506 ERR_add_error_data(2, "type: ", hdr
->value
);
507 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
511 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
513 if (!(val
= b64_read_asn1(bio
, it
))) {
514 ASN1err(ASN1_F_SMIME_READ_ASN1
, ASN1_R_ASN1_PARSE_ERROR
);
521 /* Copy text from one BIO to another making the output CRLF at EOL */
522 int SMIME_crlf_copy(BIO
*in
, BIO
*out
, int flags
)
527 char linebuf
[MAX_SMLEN
];
529 * Buffer output so we don't write one line at a time. This is useful
530 * when streaming as we don't end up with one OCTET STRING per line.
532 bf
= BIO_new(BIO_f_buffer());
535 out
= BIO_push(bf
, out
);
536 if (flags
& SMIME_BINARY
) {
537 while ((len
= BIO_read(in
, linebuf
, MAX_SMLEN
)) > 0)
538 BIO_write(out
, linebuf
, len
);
541 if (flags
& SMIME_TEXT
)
542 BIO_printf(out
, "Content-Type: text/plain\r\n\r\n");
543 while ((len
= BIO_gets(in
, linebuf
, MAX_SMLEN
)) > 0) {
544 eol
= strip_eol(linebuf
, &len
, flags
);
546 /* Not EOF: write out all CRLF */
547 if (flags
& SMIME_ASCIICRLF
) {
549 for (i
= 0; i
< eolcnt
; i
++)
550 BIO_write(out
, "\r\n", 2);
553 BIO_write(out
, linebuf
, len
);
555 BIO_write(out
, "\r\n", 2);
556 } else if (flags
& SMIME_ASCIICRLF
)
559 BIO_write(out
, "\r\n", 2);
562 (void)BIO_flush(out
);
568 /* Strip off headers if they are text/plain */
569 int SMIME_text(BIO
*in
, BIO
*out
)
573 STACK_OF(MIME_HEADER
) *headers
;
576 if (!(headers
= mime_parse_hdr(in
))) {
577 ASN1err(ASN1_F_SMIME_TEXT
, ASN1_R_MIME_PARSE_ERROR
);
580 if (!(hdr
= mime_hdr_find(headers
, "content-type")) || !hdr
->value
) {
581 ASN1err(ASN1_F_SMIME_TEXT
, ASN1_R_MIME_NO_CONTENT_TYPE
);
582 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
585 if (strcmp(hdr
->value
, "text/plain")) {
586 ASN1err(ASN1_F_SMIME_TEXT
, ASN1_R_INVALID_MIME_TYPE
);
587 ERR_add_error_data(2, "type: ", hdr
->value
);
588 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
591 sk_MIME_HEADER_pop_free(headers
, mime_hdr_free
);
592 while ((len
= BIO_read(in
, iobuf
, sizeof(iobuf
))) > 0)
593 BIO_write(out
, iobuf
, len
);
600 * Split a multipart/XXX message body into component parts: result is
601 * canonical parts in a STACK of bios
604 static int multi_split(BIO
*bio
, char *bound
, STACK_OF(BIO
) **ret
)
606 char linebuf
[MAX_SMLEN
];
608 int eol
= 0, next_eol
= 0;
610 STACK_OF(BIO
) *parts
;
611 char state
, part
, first
;
613 blen
= strlen(bound
);
617 parts
= sk_BIO_new_null();
621 while ((len
= BIO_gets(bio
, linebuf
, MAX_SMLEN
)) > 0) {
622 state
= mime_bound_check(linebuf
, len
, bound
, blen
);
626 } else if (state
== 2) {
627 if (!sk_BIO_push(parts
, bpart
)) {
633 /* Strip CR+LF from linebuf */
634 next_eol
= strip_eol(linebuf
, &len
, 0);
638 if (!sk_BIO_push(parts
, bpart
)) {
642 bpart
= BIO_new(BIO_s_mem());
645 BIO_set_mem_eof_return(bpart
, 0);
647 BIO_write(bpart
, "\r\n", 2);
650 BIO_write(bpart
, linebuf
, len
);
657 /* This is the big one: parse MIME header lines up to message body */
659 #define MIME_INVALID 0
665 #define MIME_COMMENT 6
667 static STACK_OF(MIME_HEADER
) *mime_parse_hdr(BIO
*bio
)
671 char linebuf
[MAX_SMLEN
];
672 MIME_HEADER
*mhdr
= NULL
;
673 STACK_OF(MIME_HEADER
) *headers
;
674 int len
, state
, save_state
= 0;
676 headers
= sk_MIME_HEADER_new(mime_hdr_cmp
);
679 while ((len
= BIO_gets(bio
, linebuf
, MAX_SMLEN
)) > 0) {
680 /* If whitespace at line start then continuation line */
681 if (mhdr
&& isspace((unsigned char)linebuf
[0]))
686 /* Go through all characters */
687 for (p
= linebuf
, q
= linebuf
; (c
= *p
) && (c
!= '\r') && (c
!= '\n');
691 * State machine to handle MIME headers if this looks horrible
692 * that's because it *is*
700 ntmp
= strip_ends(q
);
707 mime_debug("Found End Value\n");
709 mhdr
= mime_hdr_new(ntmp
, strip_ends(q
));
710 sk_MIME_HEADER_push(headers
, mhdr
);
714 } else if (c
== '(') {
716 state
= MIME_COMMENT
;
730 ntmp
= strip_ends(q
);
739 mime_hdr_addparam(mhdr
, ntmp
, strip_ends(q
));
742 } else if (c
== '"') {
743 mime_debug("Found Quote\n");
745 } else if (c
== '(') {
747 state
= MIME_COMMENT
;
753 mime_debug("Found Match Quote\n");
760 if (state
== MIME_TYPE
) {
761 mhdr
= mime_hdr_new(ntmp
, strip_ends(q
));
762 sk_MIME_HEADER_push(headers
, mhdr
);
763 } else if (state
== MIME_VALUE
)
764 mime_hdr_addparam(mhdr
, ntmp
, strip_ends(q
));
766 break; /* Blank line means end of headers */
773 static char *strip_ends(char *name
)
775 return strip_end(strip_start(name
));
778 /* Strip a parameter of whitespace from start of param */
779 static char *strip_start(char *name
)
782 /* Look for first non white space or quote */
783 for (p
= name
; (c
= *p
); p
++) {
785 /* Next char is start of string if non null */
788 /* Else null string */
791 if (!isspace((unsigned char)c
))
797 /* As above but strip from end of string : maybe should handle brackets? */
798 static char *strip_end(char *name
)
803 /* Look for first non white space or quote */
804 for (p
= name
+ strlen(name
) - 1; p
>= name
; p
--) {
812 if (isspace((unsigned char)c
))
820 static MIME_HEADER
*mime_hdr_new(char *name
, char *value
)
822 MIME_HEADER
*mhdr
= NULL
;
823 char *tmpname
= NULL
, *tmpval
= NULL
, *p
;
826 if (!(tmpname
= BUF_strdup(name
)))
828 for (p
= tmpname
; *p
; p
++) {
829 c
= (unsigned char)*p
;
837 if (!(tmpval
= BUF_strdup(value
)))
839 for (p
= tmpval
; *p
; p
++) {
840 c
= (unsigned char)*p
;
847 mhdr
= OPENSSL_malloc(sizeof(MIME_HEADER
));
850 mhdr
->name
= tmpname
;
851 mhdr
->value
= tmpval
;
852 if (!(mhdr
->params
= sk_MIME_PARAM_new(mime_param_cmp
)))
858 OPENSSL_free(tmpname
);
860 OPENSSL_free(tmpval
);
866 static int mime_hdr_addparam(MIME_HEADER
*mhdr
, char *name
, char *value
)
868 char *tmpname
= NULL
, *tmpval
= NULL
, *p
;
870 MIME_PARAM
*mparam
= NULL
;
872 tmpname
= BUF_strdup(name
);
875 for (p
= tmpname
; *p
; p
++) {
876 c
= (unsigned char)*p
;
884 tmpval
= BUF_strdup(value
);
888 /* Parameter values are case sensitive so leave as is */
889 mparam
= OPENSSL_malloc(sizeof(MIME_PARAM
));
892 mparam
->param_name
= tmpname
;
893 mparam
->param_value
= tmpval
;
894 if (!sk_MIME_PARAM_push(mhdr
->params
, mparam
))
899 OPENSSL_free(tmpname
);
901 OPENSSL_free(tmpval
);
903 OPENSSL_free(mparam
);
907 static int mime_hdr_cmp(const MIME_HEADER
*const *a
,
908 const MIME_HEADER
*const *b
)
910 if (!(*a
)->name
|| !(*b
)->name
)
911 return ! !(*a
)->name
- ! !(*b
)->name
;
913 return (strcmp((*a
)->name
, (*b
)->name
));
916 static int mime_param_cmp(const MIME_PARAM
*const *a
,
917 const MIME_PARAM
*const *b
)
919 if (!(*a
)->param_name
|| !(*b
)->param_name
)
920 return ! !(*a
)->param_name
- ! !(*b
)->param_name
;
921 return (strcmp((*a
)->param_name
, (*b
)->param_name
));
924 /* Find a header with a given name (if possible) */
926 static MIME_HEADER
*mime_hdr_find(STACK_OF(MIME_HEADER
) *hdrs
, char *name
)
931 idx
= sk_MIME_HEADER_find(hdrs
, &htmp
);
934 return sk_MIME_HEADER_value(hdrs
, idx
);
937 static MIME_PARAM
*mime_param_find(MIME_HEADER
*hdr
, char *name
)
941 param
.param_name
= name
;
942 idx
= sk_MIME_PARAM_find(hdr
->params
, ¶m
);
945 return sk_MIME_PARAM_value(hdr
->params
, idx
);
948 static void mime_hdr_free(MIME_HEADER
*hdr
)
951 OPENSSL_free(hdr
->name
);
953 OPENSSL_free(hdr
->value
);
955 sk_MIME_PARAM_pop_free(hdr
->params
, mime_param_free
);
959 static void mime_param_free(MIME_PARAM
*param
)
961 if (param
->param_name
)
962 OPENSSL_free(param
->param_name
);
963 if (param
->param_value
)
964 OPENSSL_free(param
->param_value
);
969 * Check for a multipart boundary. Returns:
974 static int mime_bound_check(char *line
, int linelen
, char *bound
, int blen
)
977 linelen
= strlen(line
);
979 blen
= strlen(bound
);
980 /* Quickly eliminate if line length too short */
981 if (blen
+ 2 > linelen
)
983 /* Check for part boundary */
984 if (!strncmp(line
, "--", 2) && !strncmp(line
+ 2, bound
, blen
)) {
985 if (!strncmp(line
+ blen
+ 2, "--", 2))
993 static int strip_eol(char *linebuf
, int *plen
, int flags
)
998 p
= linebuf
+ len
- 1;
999 for (p
= linebuf
+ len
- 1; len
> 0; len
--, p
--) {
1003 else if (is_eol
&& flags
& SMIME_ASCIICRLF
&& c
< 33)