generic-library/openssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Remove unnecessary use of ASN1_const_CTX

Browse Source 
Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2015-04-03 18:28:06 +01:00
parent cc5b6a03a3
commit 1880790e2e
1 changed files with 14 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
crypto/asn1/a_d2i_fp.c
View File

@ -146,12 +146,15 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
BUF_MEM *b;
unsigned char *p;
int i;
ASN1_const_CTX c;
size_t want = HEADER_SIZE;
int eos = 0;
size_t off = 0;
size_t len = 0;
const unsigned char *q;
long slen;
int inf, tag, xclass;
b = BUF_MEM_new();
if (b == NULL) {
ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE);
@ -183,10 +186,9 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
/* 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) {
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());
@ -195,10 +197,10 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
else
ERR_clear_error(); /* clear error */
}
i = c.p - p; /* header length */
i = q - p; /* header length */
off += i; /* end of data */
if (c.inf & 1) {
if (inf & 1) {
/* no data body so go round again */
eos++;
if (eos < 0) {
@ -206,7 +208,7 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
goto err;
}
want = HEADER_SIZE;
} else if (eos && (c.slen == 0) && (c.tag == V_ASN1_EOC)) {
} else if (eos && (slen == 0) && (tag == V_ASN1_EOC)) {
/* eos value, so go back and read another header */
eos--;
if (eos <= 0)
@ -214,8 +216,8 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
else
want = HEADER_SIZE;
} else {
/* suck in c.slen bytes of data */
want = c.slen;
/* 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 */ ||
@ -242,11 +244,11 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
want -= i;
}
}
if (off + c.slen < off) {
if (off + slen < off) {
ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG);
goto err;
}
off += c.slen;
off += slen;
if (eos <= 0) {
break;
} else