2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
62 #include <openssl/rand.h>
63 #include <openssl/x509.h>
65 /* MIME and related routines */
67 /* MIME format structures
68 * Note that all are translated to lower case apart from
69 * parameter values. Quotes are stripped off
73 char *param_name; /* Param name e.g. "micalg" */
74 char *param_value; /* Param value e.g. "sha1" */
77 DECLARE_STACK_OF(MIME_PARAM)
78 /* This block of defines is updated by a perl script, please do not touch! */
79 #ifndef DEBUG_SAFESTACK
80 #define sk_MIME_PARAM_new(a) sk_new((int (*) \
81 (const char * const *, const char * const *))(a))
82 #define sk_MIME_PARAM_new_null() sk_new_null()
83 #define sk_MIME_PARAM_free(a) sk_free(a)
84 #define sk_MIME_PARAM_num(a) sk_num(a)
85 #define sk_MIME_PARAM_value(a,b) ((MIME_PARAM *) \
87 #define sk_MIME_PARAM_set(a,b,c) ((MIME_PARAM *) \
88 sk_set((a),(b),(char *)(c)))
89 #define sk_MIME_PARAM_zero(a) sk_zero(a)
90 #define sk_MIME_PARAM_push(a,b) sk_push((a),(char *)(b))
91 #define sk_MIME_PARAM_unshift(a,b) sk_unshift((a),(b))
92 #define sk_MIME_PARAM_find(a,b) sk_find((a), (char *)(b))
93 #define sk_MIME_PARAM_delete(a,b) ((MIME_PARAM *) \
95 #define sk_MIME_PARAM_delete_ptr(a,b) ((MIME_PARAM *) \
96 sk_delete_ptr((a),(char *)(b)))
97 #define sk_MIME_PARAM_insert(a,b,c) sk_insert((a),(char *)(b),(c))
98 #define sk_MIME_PARAM_set_cmp_func(a,b) ((int (*) \
99 (const MIME_PARAM * const *,const MIME_PARAM * const *)) \
100 sk_set_cmp_func((a),(int (*) \
101 (const char * const *, const char * const *))(b)))
102 #define sk_MIME_PARAM_dup(a) sk_dup(a)
103 #define sk_MIME_PARAM_pop_free(a,b) sk_pop_free((a),(void (*)(void *))(b))
104 #define sk_MIME_PARAM_shift(a) ((MIME_PARAM *)sk_shift(a))
105 #define sk_MIME_PARAM_pop(a) ((MIME_PARAM *)sk_pop(a))
106 #define sk_MIME_PARAM_sort(a) sk_sort(a)
107 #endif /* !DEBUG_SAFESTACK */
108 /* End of perl script block, you may now edit :-) */
109 IMPLEMENT_STACK_OF(MIME_PARAM)
112 char *name; /* Name of line e.g. "content-type" */
113 char *value; /* Value of line e.g. "text/plain" */
114 STACK_OF(MIME_PARAM) *params; /* Zero or more parameters */
117 DECLARE_STACK_OF(MIME_HEADER)
118 /* This block of defines is updated by a perl script, please do not touch! */
119 #ifndef DEBUG_SAFESTACK
120 #define sk_MIME_HEADER_new(a) sk_new((int (*) \
121 (const char * const *, const char * const *))(a))
122 #define sk_MIME_HEADER_new_null() sk_new_null()
123 #define sk_MIME_HEADER_free(a) sk_free(a)
124 #define sk_MIME_HEADER_num(a) sk_num(a)
125 #define sk_MIME_HEADER_value(a,b) ((MIME_HEADER *) \
127 #define sk_MIME_HEADER_set(a,b,c) ((MIME_HEADER *) \
128 sk_set((a),(b),(char *)(c)))
129 #define sk_MIME_HEADER_zero(a) sk_zero(a)
130 #define sk_MIME_HEADER_push(a,b) sk_push((a),(char *)(b))
131 #define sk_MIME_HEADER_unshift(a,b) sk_unshift((a),(b))
132 #define sk_MIME_HEADER_find(a,b) sk_find((a), (char *)(b))
133 #define sk_MIME_HEADER_delete(a,b) ((MIME_HEADER *) \
135 #define sk_MIME_HEADER_delete_ptr(a,b) ((MIME_HEADER *) \
136 sk_delete_ptr((a),(char *)(b)))
137 #define sk_MIME_HEADER_insert(a,b,c) sk_insert((a),(char *)(b),(c))
138 #define sk_MIME_HEADER_set_cmp_func(a,b) ((int (*) \
139 (const MIME_HEADER * const *,const MIME_HEADER * const *)) \
140 sk_set_cmp_func((a),(int (*) \
141 (const char * const *, const char * const *))(b)))
142 #define sk_MIME_HEADER_dup(a) sk_dup(a)
143 #define sk_MIME_HEADER_pop_free(a,b) sk_pop_free((a),(void (*)(void *))(b))
144 #define sk_MIME_HEADER_shift(a) ((MIME_HEADER *)sk_shift(a))
145 #define sk_MIME_HEADER_pop(a) ((MIME_HEADER *)sk_pop(a))
146 #define sk_MIME_HEADER_sort(a) sk_sort(a)
147 #endif /* !DEBUG_SAFESTACK */
148 /* End of perl script block, you may now edit :-) */
149 IMPLEMENT_STACK_OF(MIME_HEADER)
151 static int B64_write_PKCS7(BIO *bio, PKCS7 *p7);
152 static PKCS7 *B64_read_PKCS7(BIO *bio);
153 static char * strip_ends(char *name);
154 static char * strip_start(char *name);
155 static char * strip_end(char *name);
156 static MIME_HEADER *mime_hdr_new(char *name, char *value);
157 static int mime_hdr_addparam(MIME_HEADER *mhdr, char *name, char *value);
158 static STACK_OF(MIME_HEADER) *mime_parse_hdr(BIO *bio);
159 static int mime_hdr_cmp(const MIME_HEADER * const *a,
160 const MIME_HEADER * const *b);
161 static int mime_param_cmp(const MIME_PARAM * const *a,
162 const MIME_PARAM * const *b);
163 static void mime_param_free(MIME_PARAM *param);
164 static int mime_bound_check(char *line, int linelen, char *bound, int blen);
165 static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret);
166 static int iscrlf(char c);
167 static MIME_HEADER *mime_hdr_find(STACK_OF(MIME_HEADER) *hdrs, char *name);
168 static MIME_PARAM *mime_param_find(MIME_HEADER *hdr, char *name);
169 static void mime_hdr_free(MIME_HEADER *hdr);
171 #define MAX_SMLEN 1024
172 #define mime_debug(x) /* x */
175 typedef void (*stkfree)();
177 /* Base 64 read and write of PKCS#7 structure */
179 static int B64_write_PKCS7(BIO *bio, PKCS7 *p7)
182 if(!(b64 = BIO_new(BIO_f_base64()))) {
183 PKCS7err(PKCS7_F_B64_WRITE_PKCS7,ERR_R_MALLOC_FAILURE);
186 bio = BIO_push(b64, bio);
187 i2d_PKCS7_bio(bio, p7);
194 static PKCS7 *B64_read_PKCS7(BIO *bio)
198 if(!(b64 = BIO_new(BIO_f_base64()))) {
199 PKCS7err(PKCS7_F_B64_READ_PKCS7,ERR_R_MALLOC_FAILURE);
202 bio = BIO_push(b64, bio);
203 if(!(p7 = d2i_PKCS7_bio(bio, NULL)))
204 PKCS7err(PKCS7_F_B64_READ_PKCS7,PKCS7_R_DECODE_ERROR);
213 int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
215 char linebuf[MAX_SMLEN];
218 if((flags & PKCS7_DETACHED) && data) {
219 /* We want multipart/signed */
220 /* Generate a random boundary */
221 RAND_pseudo_bytes((unsigned char *)bound, 32);
222 for(i = 0; i < 32; i++) {
229 BIO_printf(bio, "MIME-Version: 1.0\n");
230 BIO_printf(bio, "Content-Type: multipart/signed ; ");
231 BIO_printf(bio, "protocol=\"application/x-pkcs7-signature\" ; ");
232 BIO_printf(bio, "micalg=sha1 ; boundary=\"----%s\"\n\n", bound);
233 BIO_printf(bio, "This is an S/MIME signed message\n\n");
234 /* Now write out the first part */
235 BIO_printf(bio, "------%s\r\n", bound);
236 if(flags & PKCS7_TEXT) BIO_printf(bio, "Content-Type: text/plain\n\n");
237 while((i = BIO_read(data, linebuf, MAX_SMLEN)) > 0)
238 BIO_write(bio, linebuf, i);
239 BIO_printf(bio, "\n------%s\n", bound);
241 /* Headers for signature */
243 BIO_printf(bio, "Content-Type: application/x-pkcs7-signature; name=\"smime.p7s\"\n");
244 BIO_printf(bio, "Content-Transfer-Encoding: base64\n");
245 BIO_printf(bio, "Content-Disposition: attachment; filename=\"smime.p7s\"\n\n");
246 B64_write_PKCS7(bio, p7);
247 BIO_printf(bio,"\n------%s--\n\n", bound);
251 BIO_printf(bio, "MIME-Version: 1.0\n");
252 BIO_printf(bio, "Content-Disposition: attachment; filename=\"smime.p7m\"\n");
253 BIO_printf(bio, "Content-Type: application/x-pkcs7-mime; name=\"smime.p7m\"\n");
254 BIO_printf(bio, "Content-Transfer-Encoding: base64\n\n");
255 B64_write_PKCS7(bio, p7);
256 BIO_printf(bio, "\n");
260 /* SMIME reader: handle multipart/signed and opaque signing.
261 * in multipart case the content is placed in a memory BIO
262 * pointed to by "bcont". In opaque this is set to NULL
265 PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont)
268 STACK_OF(MIME_HEADER) *headers = NULL;
269 STACK_OF(BIO) *parts = NULL;
275 if(bcont) *bcont = NULL;
277 if (!(headers = mime_parse_hdr(bio))) {
278 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_MIME_PARSE_ERROR);
282 if(!(hdr = mime_hdr_find(headers, "content-type")) || !hdr->value) {
283 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
284 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_CONTENT_TYPE);
288 /* Handle multipart/signed */
290 if(!strcmp(hdr->value, "multipart/signed")) {
291 /* Split into two parts */
292 prm = mime_param_find(hdr, "boundary");
293 if(!prm || !prm->param_value) {
294 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
295 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_MULTIPART_BOUNDARY);
298 ret = multi_split(bio, prm->param_value, &parts);
299 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
300 if(!ret || (sk_BIO_num(parts) != 2) ) {
301 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_MULTIPART_BODY_FAILURE);
302 sk_BIO_pop_free(parts, BIO_vfree);
306 /* Parse the signature piece */
307 p7in = sk_BIO_value(parts, 1);
309 if (!(headers = mime_parse_hdr(p7in))) {
310 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_MIME_SIG_PARSE_ERROR);
311 sk_BIO_pop_free(parts, BIO_vfree);
315 /* Get content type */
317 if(!(hdr = mime_hdr_find(headers, "content-type")) ||
319 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
320 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_NO_SIG_CONTENT_TYPE);
324 if(strcmp(hdr->value, "application/x-pkcs7-signature") &&
325 strcmp(hdr->value, "application/pkcs7-signature")) {
326 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
327 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_SIG_INVALID_MIME_TYPE);
328 ERR_add_error_data(2, "type: ", hdr->value);
329 sk_BIO_pop_free(parts, BIO_vfree);
332 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
334 if(!(p7 = B64_read_PKCS7(p7in))) {
335 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_PKCS7_SIG_PARSE_ERROR);
336 sk_BIO_pop_free(parts, BIO_vfree);
341 *bcont = sk_BIO_value(parts, 0);
344 } else sk_BIO_pop_free(parts, BIO_vfree);
348 /* OK, if not multipart/signed try opaque signature */
350 if (strcmp (hdr->value, "application/x-pkcs7-mime") &&
351 strcmp (hdr->value, "application/pkcs7-mime")) {
352 PKCS7err(PKCS7_F_SMIME_READ_PKCS7,PKCS7_R_INVALID_MIME_TYPE);
353 ERR_add_error_data(2, "type: ", hdr->value);
354 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
358 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
360 if(!(p7 = B64_read_PKCS7(bio))) {
361 PKCS7err(PKCS7_F_SMIME_READ_PKCS7, PKCS7_R_PKCS7_PARSE_ERROR);
368 /* Copy text from one BIO to another making the output CRLF at EOL */
369 int SMIME_crlf_copy(BIO *in, BIO *out, int flags)
373 char linebuf[MAX_SMLEN];
374 if(flags & PKCS7_BINARY) {
375 while((len = BIO_read(in, linebuf, MAX_SMLEN)) > 0)
376 BIO_write(out, linebuf, len);
379 if(flags & PKCS7_TEXT) BIO_printf(out, "Content-Type: text/plain\r\n\r\n");
380 while ((len = BIO_gets(in, linebuf, MAX_SMLEN)) > 0) {
382 while(iscrlf(linebuf[len - 1])) {
386 BIO_write(out, linebuf, len);
387 if(eol) BIO_write(out, "\r\n", 2);
392 /* Strip off headers if they are text/plain */
393 int SMIME_text(BIO *in, BIO *out)
397 STACK_OF(MIME_HEADER) *headers;
400 if (!(headers = mime_parse_hdr(in))) {
401 PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_MIME_PARSE_ERROR);
404 if(!(hdr = mime_hdr_find(headers, "content-type")) || !hdr->value) {
405 PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_MIME_NO_CONTENT_TYPE);
406 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
409 if (strcmp (hdr->value, "text/plain")) {
410 PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_INVALID_MIME_TYPE);
411 ERR_add_error_data(2, "type: ", hdr->value);
412 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
415 sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
416 while ((len = BIO_read(in, iobuf, sizeof(iobuf))) > 0)
417 BIO_write(out, iobuf, len);
421 /* Split a multipart/XXX message body into component parts: result is
422 * canonical parts in a STACK of bios
425 static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
427 char linebuf[MAX_SMLEN];
430 STACK_OF(BIO) *parts;
431 char state, part, first;
433 blen = strlen(bound);
437 parts = sk_BIO_new(NULL);
439 while ((len = BIO_gets(bio, linebuf, MAX_SMLEN)) > 0) {
440 state = mime_bound_check(linebuf, len, bound, blen);
444 } else if(state == 2) {
445 sk_BIO_push(parts, bpart);
450 if(bpart) sk_BIO_push(parts, bpart);
451 bpart = BIO_new(BIO_s_mem());
453 } else BIO_write(bpart, "\r\n", 2);
454 /* Strip CR+LF from linebuf */
455 while(iscrlf(linebuf[len - 1])) len--;
456 BIO_write(bpart, linebuf, len);
462 static int iscrlf(char c)
464 if(c == '\r' || c == '\n') return 1;
468 /* This is the big one: parse MIME header lines up to message body */
470 #define MIME_INVALID 0
476 #define MIME_COMMENT 6
479 static STACK_OF(MIME_HEADER) *mime_parse_hdr(BIO *bio)
483 char linebuf[MAX_SMLEN];
484 MIME_HEADER *mhdr = NULL;
485 STACK_OF(MIME_HEADER) *headers;
486 int len, state, save_state = 0;
488 headers = sk_MIME_HEADER_new(mime_hdr_cmp);
489 while ((len = BIO_gets(bio, linebuf, MAX_SMLEN)) > 0) {
490 /* If whitespace at line start then continuation line */
491 if(mhdr && isspace((unsigned char)linebuf[0])) state = MIME_NAME;
492 else state = MIME_START;
494 /* Go through all characters */
495 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
497 /* State machine to handle MIME headers
498 * if this looks horrible that's because it *is*
506 ntmp = strip_ends(q);
513 mime_debug("Found End Value\n");
515 mhdr = mime_hdr_new(ntmp, strip_ends(q));
516 sk_MIME_HEADER_push(headers, mhdr);
520 } else if(c == '(') {
522 state = MIME_COMMENT;
536 ntmp = strip_ends(q);
545 mime_hdr_addparam(mhdr, ntmp, strip_ends(q));
548 } else if (c == '"') {
549 mime_debug("Found Quote\n");
551 } else if(c == '(') {
553 state = MIME_COMMENT;
559 mime_debug("Found Match Quote\n");
566 if(state == MIME_TYPE) {
567 mhdr = mime_hdr_new(ntmp, strip_ends(q));
568 sk_MIME_HEADER_push(headers, mhdr);
569 } else if(state == MIME_VALUE)
570 mime_hdr_addparam(mhdr, ntmp, strip_ends(q));
571 if(p == linebuf) break; /* Blank line means end of headers */
578 static char *strip_ends(char *name)
580 return strip_end(strip_start(name));
583 /* Strip a parameter of whitespace from start of param */
584 static char *strip_start(char *name)
587 /* Look for first non white space or quote */
588 for(p = name; (c = *p) ;p++) {
590 /* Next char is start of string if non null */
591 if(p[1]) return p + 1;
592 /* Else null string */
595 if(!isspace((unsigned char)c)) return p;
600 /* As above but strip from end of string : maybe should handle brackets? */
601 static char *strip_end(char *name)
604 if(!name) return NULL;
605 /* Look for first non white space or quote */
606 for(p = name + strlen(name) - 1; p >= name ;p--) {
609 if(p - 1 == name) return NULL;
613 if(isspace((unsigned char)c)) *p = 0;
619 static MIME_HEADER *mime_hdr_new(char *name, char *value)
622 char *tmpname, *tmpval, *p;
625 if(!(tmpname = BUF_strdup(name))) return NULL;
626 for(p = tmpname ; *p; p++) {
633 } else tmpname = NULL;
635 if(!(tmpval = BUF_strdup(value))) return NULL;
636 for(p = tmpval ; *p; p++) {
643 } else tmpval = NULL;
644 mhdr = (MIME_HEADER *) OPENSSL_malloc(sizeof(MIME_HEADER));
645 if(!mhdr) return NULL;
646 mhdr->name = tmpname;
647 mhdr->value = tmpval;
648 if(!(mhdr->params = sk_MIME_PARAM_new(mime_param_cmp))) return NULL;
652 static int mime_hdr_addparam(MIME_HEADER *mhdr, char *name, char *value)
654 char *tmpname, *tmpval, *p;
658 tmpname = BUF_strdup(name);
659 if(!tmpname) return 0;
660 for(p = tmpname ; *p; p++) {
667 } else tmpname = NULL;
669 tmpval = BUF_strdup(value);
670 if(!tmpval) return 0;
671 } else tmpval = NULL;
672 /* Parameter values are case sensitive so leave as is */
673 mparam = (MIME_PARAM *) OPENSSL_malloc(sizeof(MIME_PARAM));
674 if(!mparam) return 0;
675 mparam->param_name = tmpname;
676 mparam->param_value = tmpval;
677 sk_MIME_PARAM_push(mhdr->params, mparam);
681 static int mime_hdr_cmp(const MIME_HEADER * const *a,
682 const MIME_HEADER * const *b)
684 return(strcmp((*a)->name, (*b)->name));
687 static int mime_param_cmp(const MIME_PARAM * const *a,
688 const MIME_PARAM * const *b)
690 return(strcmp((*a)->param_name, (*b)->param_name));
693 /* Find a header with a given name (if possible) */
695 static MIME_HEADER *mime_hdr_find(STACK_OF(MIME_HEADER) *hdrs, char *name)
700 idx = sk_MIME_HEADER_find(hdrs, &htmp);
701 if(idx < 0) return NULL;
702 return sk_MIME_HEADER_value(hdrs, idx);
705 static MIME_PARAM *mime_param_find(MIME_HEADER *hdr, char *name)
709 param.param_name = name;
710 idx = sk_MIME_PARAM_find(hdr->params, ¶m);
711 if(idx < 0) return NULL;
712 return sk_MIME_PARAM_value(hdr->params, idx);
715 static void mime_hdr_free(MIME_HEADER *hdr)
717 if(hdr->name) OPENSSL_free(hdr->name);
718 if(hdr->value) OPENSSL_free(hdr->value);
719 if(hdr->params) sk_MIME_PARAM_pop_free(hdr->params, mime_param_free);
723 static void mime_param_free(MIME_PARAM *param)
725 if(param->param_name) OPENSSL_free(param->param_name);
726 if(param->param_value) OPENSSL_free(param->param_value);
730 /* Check for a multipart boundary. Returns:
735 static int mime_bound_check(char *line, int linelen, char *bound, int blen)
737 if(linelen == -1) linelen = strlen(line);
738 if(blen == -1) blen = strlen(bound);
739 /* Quickly eliminate if line length too short */
740 if(blen + 2 > linelen) return 0;
741 /* Check for part boundary */
742 if(!strncmp(line, "--", 2) && !strncmp(line + 2, bound, blen)) {
743 if(!strncmp(line + blen + 2, "--", 2)) return 2;