* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
*/
#include <stdio.h>
+#include <limits.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
-#include <openssl/asn1_mac.h>
+#include <openssl/asn1.h>
static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);
#ifndef NO_OLD_ASN1
-#ifndef OPENSSL_NO_FP_API
+# ifndef OPENSSL_NO_STDIO
-char *ASN1_d2i_fp(char *(*xnew)(), char *(*d2i)(), FILE *in,
- unsigned char **x)
- {
- BIO *b;
- char *ret;
+void *ASN1_d2i_fp(void *(*xnew) (void), d2i_of_void *d2i, FILE *in, void **x)
+{
+ BIO *b;
+ void *ret;
- if ((b=BIO_new(BIO_s_file())) == NULL)
- {
- ASN1err(ASN1_F_ASN1_D2I_FP,ERR_R_BUF_LIB);
- return(NULL);
- }
- BIO_set_fp(b,in,BIO_NOCLOSE);
- ret=ASN1_d2i_bio(xnew,d2i,b,x);
- BIO_free(b);
- return(ret);
- }
-#endif
+ if ((b = BIO_new(BIO_s_file())) == NULL) {
+ ASN1err(ASN1_F_ASN1_D2I_FP, ERR_R_BUF_LIB);
+ return (NULL);
+ }
+ BIO_set_fp(b, in, BIO_NOCLOSE);
+ ret = ASN1_d2i_bio(xnew, d2i, b, x);
+ BIO_free(b);
+ return (ret);
+}
+# endif
-char *ASN1_d2i_bio(char *(*xnew)(), char *(*d2i)(), BIO *in,
- unsigned char **x)
- {
- BUF_MEM *b = NULL;
- unsigned char *p;
- char *ret=NULL;
- int len;
+void *ASN1_d2i_bio(void *(*xnew) (void), d2i_of_void *d2i, BIO *in, void **x)
+{
+ BUF_MEM *b = NULL;
+ const unsigned char *p;
+ void *ret = NULL;
+ int len;
- len = asn1_d2i_read_bio(in, &b);
- if(len < 0) goto err;
+ len = asn1_d2i_read_bio(in, &b);
+ if (len < 0)
+ goto err;
- p=(unsigned char *)b->data;
- ret=d2i(x,&p,len);
-err:
- if (b != NULL) BUF_MEM_free(b);
- return(ret);
- }
+ p = (unsigned char *)b->data;
+ ret = d2i(x, &p, len);
+ err:
+ if (b != NULL)
+ BUF_MEM_free(b);
+ return (ret);
+}
#endif
void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x)
- {
- BUF_MEM *b = NULL;
- unsigned char *p;
- void *ret=NULL;
- int len;
+{
+ BUF_MEM *b = NULL;
+ const unsigned char *p;
+ void *ret = NULL;
+ int len;
- len = asn1_d2i_read_bio(in, &b);
- if(len < 0) goto err;
+ len = asn1_d2i_read_bio(in, &b);
+ if (len < 0)
+ goto err;
- p=(unsigned char *)b->data;
- ret=ASN1_item_d2i(x,&p,len, it);
-err:
- if (b != NULL) BUF_MEM_free(b);
- return(ret);
- }
+ p = (const unsigned char *)b->data;
+ ret = ASN1_item_d2i(x, &p, len, it);
+ err:
+ if (b != NULL)
+ BUF_MEM_free(b);
+ return (ret);
+}
-#ifndef OPENSSL_NO_FP_API
+#ifndef OPENSSL_NO_STDIO
void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x)
- {
- BIO *b;
- char *ret;
+{
+ BIO *b;
+ char *ret;
- if ((b=BIO_new(BIO_s_file())) == NULL)
- {
- ASN1err(ASN1_F_ASN1_D2I_FP,ERR_R_BUF_LIB);
- return(NULL);
- }
- BIO_set_fp(b,in,BIO_NOCLOSE);
- ret=ASN1_item_d2i_bio(it,b,x);
- BIO_free(b);
- return(ret);
- }
+ if ((b = BIO_new(BIO_s_file())) == NULL) {
+ ASN1err(ASN1_F_ASN1_ITEM_D2I_FP, ERR_R_BUF_LIB);
+ return (NULL);
+ }
+ BIO_set_fp(b, in, BIO_NOCLOSE);
+ ret = ASN1_item_d2i_bio(it, b, x);
+ BIO_free(b);
+ return (ret);
+}
#endif
#define HEADER_SIZE 8
static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
- {
- BUF_MEM *b;
- unsigned char *p;
- int i;
- int ret=-1;
- ASN1_CTX c;
- int want=HEADER_SIZE;
- int eos=0;
-#if defined(__GNUC__) && defined(__ia64)
- /* pathetic compiler bug in all known versions as of Nov. 2002 */
- long off=0;
-#else
- int off=0;
-#endif
- int len=0;
+{
+ BUF_MEM *b;
+ unsigned char *p;
+ int i;
+ size_t want = HEADER_SIZE;
+ int eos = 0;
+ size_t off = 0;
+ size_t len = 0;
- b=BUF_MEM_new();
- if (b == NULL)
- {
- ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
- return -1;
- }
+ const unsigned char *q;
+ long slen;
+ int inf, tag, xclass;
- ERR_clear_error();
- for (;;)
- {
- if (want >= (len-off))
- {
- want-=(len-off);
+ b = BUF_MEM_new();
+ if (b == NULL) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
- if (!BUF_MEM_grow_clean(b,len+want))
- {
- ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- i=BIO_read(in,&(b->data[len]),want);
- if ((i < 0) && ((len-off) == 0))
- {
- ASN1err(ASN1_F_ASN1_D2I_BIO,ASN1_R_NOT_ENOUGH_DATA);
- goto err;
- }
- if (i > 0)
- len+=i;
- }
- /* else data already loaded */
+ ERR_clear_error();
+ for (;;) {
+ if (want >= (len - off)) {
+ want -= (len - off);
+
+ if (len + want < len || !BUF_MEM_grow_clean(b, len + want)) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ i = BIO_read(in, &(b->data[len]), want);
+ if ((i < 0) && ((len - off) == 0)) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_NOT_ENOUGH_DATA);
+ goto err;
+ }
+ if (i > 0) {
+ if (len + i < len) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG);
+ goto err;
+ }
+ len += i;
+ }
+ }
+ /* else data already loaded */
- p=(unsigned char *)&(b->data[off]);
- c.p=p;
- c.inf=ASN1_get_object(&(c.p),&(c.slen),&(c.tag),&(c.xclass),
- len-off);
- if (c.inf & 0x80)
- {
- unsigned long e;
+ p = (unsigned char *)&(b->data[off]);
+ q = p;
+ inf = ASN1_get_object(&q, &slen, &tag, &xclass, len - off);
+ if (inf & 0x80) {
+ unsigned long e;
- e=ERR_GET_REASON(ERR_peek_error());
- if (e != ASN1_R_TOO_LONG)
- goto err;
- else
- ERR_get_error(); /* clear error */
- }
- i=c.p-p;/* header length */
- off+=i; /* end of data */
+ e = ERR_GET_REASON(ERR_peek_error());
+ if (e != ASN1_R_TOO_LONG)
+ goto err;
+ else
+ ERR_clear_error(); /* clear error */
+ }
+ i = q - p; /* header length */
+ off += i; /* end of data */
+
+ if (inf & 1) {
+ /* no data body so go round again */
+ eos++;
+ if (eos < 0) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_HEADER_TOO_LONG);
+ goto err;
+ }
+ want = HEADER_SIZE;
+ } else if (eos && (slen == 0) && (tag == V_ASN1_EOC)) {
+ /* eos value, so go back and read another header */
+ eos--;
+ if (eos <= 0)
+ break;
+ else
+ want = HEADER_SIZE;
+ } else {
+ /* suck in slen bytes of data */
+ want = slen;
+ if (want > (len - off)) {
+ want -= (len - off);
+ if (want > INT_MAX /* BIO_read takes an int length */ ||
+ len + want < len) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG);
+ goto err;
+ }
+ if (!BUF_MEM_grow_clean(b, len + want)) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ while (want > 0) {
+ i = BIO_read(in, &(b->data[len]), want);
+ if (i <= 0) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO,
+ ASN1_R_NOT_ENOUGH_DATA);
+ goto err;
+ }
+ /*
+ * This can't overflow because |len+want| didn't
+ * overflow.
+ */
+ len += i;
+ want -= i;
+ }
+ }
+ if (off + slen < off) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG);
+ goto err;
+ }
+ off += slen;
+ if (eos <= 0) {
+ break;
+ } else
+ want = HEADER_SIZE;
+ }
+ }
- if (c.inf & 1)
- {
- /* no data body so go round again */
- eos++;
- want=HEADER_SIZE;
- }
- else if (eos && (c.slen == 0) && (c.tag == V_ASN1_EOC))
- {
- /* eos value, so go back and read another header */
- eos--;
- if (eos <= 0)
- break;
- else
- want=HEADER_SIZE;
- }
- else
- {
- /* suck in c.slen bytes of data */
- want=(int)c.slen;
- if (want > (len-off))
- {
- want-=(len-off);
- if (!BUF_MEM_grow_clean(b,len+want))
- {
- ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- while (want > 0)
- {
- i=BIO_read(in,&(b->data[len]),want);
- if (i <= 0)
- {
- ASN1err(ASN1_F_ASN1_D2I_BIO,
- ASN1_R_NOT_ENOUGH_DATA);
- goto err;
- }
- len+=i;
- want -= i;
- }
- }
- off+=(int)c.slen;
- if (eos <= 0)
- {
- break;
- }
- else
- want=HEADER_SIZE;
- }
- }
+ if (off > INT_MAX) {
+ ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG);
+ goto err;
+ }
- *pb = b;
- return off;
-err:
- if (b != NULL) BUF_MEM_free(b);
- return(ret);
- }
+ *pb = b;
+ return off;
+ err:
+ if (b != NULL)
+ BUF_MEM_free(b);
+ return -1;
+}
projects / openssl.git / blobdiff