- {
- int ret,j,bits,len;
- unsigned char *p,*d;
-
- if (a == NULL) return(0);
-
- len=a->length;
- ret=1+len;
- if (pp == NULL) return(ret);
-
- if (len > 0)
- {
- if (a->flags & ASN1_STRING_FLAG_BITS_LEFT)
- {
- bits=(int)a->flags&0x07;
- }
- else
- {
- for ( ; len > 0; len--)
- {
- if (a->data[len-1]) break;
- }
- j=a->data[len-1];
- if (j & 0x01) bits=0;
- else if (j & 0x02) bits=1;
- else if (j & 0x04) bits=2;
- else if (j & 0x08) bits=3;
- else if (j & 0x10) bits=4;
- else if (j & 0x20) bits=5;
- else if (j & 0x40) bits=6;
- else if (j & 0x80) bits=7;
- else bits=0; /* should not happen */
- }
- }
- else
- bits=0;
- p= *pp;
-
- *(p++)=(unsigned char)bits;
- d=a->data;
- memcpy(p,d,len);
- p+=len;
- if (len > 0) p[-1]&=(0xff<<bits);
- *pp=p;
- return(ret);
- }
-
-ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a, unsigned char **pp,
- long len)
- {
- ASN1_BIT_STRING *ret=NULL;
- unsigned char *p,*s;
- int i;
-
- if ((a == NULL) || ((*a) == NULL))
- {
- if ((ret=M_ASN1_BIT_STRING_new()) == NULL) return(NULL);
- }
- else
- ret=(*a);
-
- p= *pp;
- i= *(p++);
- /* We do this to preserve the settings. If we modify
- * the settings, via the _set_bit function, we will recalculate
- * on output */
- ret->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear */
- ret->flags|=(ASN1_STRING_FLAG_BITS_LEFT|(i&0x07)); /* set */
-
- if (len-- > 1) /* using one because of the bits left byte */
- {
- s=(unsigned char *)OPENSSL_malloc((int)len);
- if (s == NULL)
- {
- i=ERR_R_MALLOC_FAILURE;
- goto err;
- }
- memcpy(s,p,(int)len);
- s[len-1]&=(0xff<<i);
- p+=len;
- }
- else
- s=NULL;
-
- ret->length=(int)len;
- if (ret->data != NULL) OPENSSL_free(ret->data);
- ret->data=s;
- ret->type=V_ASN1_BIT_STRING;
- if (a != NULL) (*a)=ret;
- *pp=p;
- return(ret);
-err:
- ASN1err(ASN1_F_D2I_ASN1_BIT_STRING,i);
- if ((ret != NULL) && ((a == NULL) || (*a != ret)))
- M_ASN1_BIT_STRING_free(ret);
- return(NULL);
- }
-
-/* These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
+{
+ int ret, j, bits, len;
+ unsigned char *p, *d;
+
+ if (a == NULL)
+ return (0);
+
+ len = a->length;
+
+ if (len > 0) {
+ if (a->flags & ASN1_STRING_FLAG_BITS_LEFT) {
+ bits = (int)a->flags & 0x07;
+ } else {
+ for (; len > 0; len--) {
+ if (a->data[len - 1])
+ break;
+ }
+ j = a->data[len - 1];
+ if (j & 0x01)
+ bits = 0;
+ else if (j & 0x02)
+ bits = 1;
+ else if (j & 0x04)
+ bits = 2;
+ else if (j & 0x08)
+ bits = 3;
+ else if (j & 0x10)
+ bits = 4;
+ else if (j & 0x20)
+ bits = 5;
+ else if (j & 0x40)
+ bits = 6;
+ else if (j & 0x80)
+ bits = 7;
+ else
+ bits = 0; /* should not happen */
+ }
+ } else
+ bits = 0;
+
+ ret = 1 + len;
+ if (pp == NULL)
+ return (ret);
+
+ p = *pp;
+
+ *(p++) = (unsigned char)bits;
+ d = a->data;
+ memcpy(p, d, len);
+ p += len;
+ if (len > 0)
+ p[-1] &= (0xff << bits);
+ *pp = p;
+ return (ret);
+}
+
+ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
+ const unsigned char **pp, long len)
+{
+ ASN1_BIT_STRING *ret = NULL;
+ const unsigned char *p;
+ unsigned char *s;
+ int i;
+
+ if (len < 1) {
+ i = ASN1_R_STRING_TOO_SHORT;
+ goto err;
+ }
+
+ if ((a == NULL) || ((*a) == NULL)) {
+ if ((ret = ASN1_BIT_STRING_new()) == NULL)
+ return (NULL);
+ } else
+ ret = (*a);
+
+ p = *pp;
+ i = *(p++);
+ if (i > 7) {
+ i = ASN1_R_INVALID_BIT_STRING_BITS_LEFT;
+ goto err;
+ }
+ /*
+ * We do this to preserve the settings. If we modify the settings, via
+ * the _set_bit function, we will recalculate on output
+ */
+ ret->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear */
+ ret->flags |= (ASN1_STRING_FLAG_BITS_LEFT | i); /* set */
+
+ if (len-- > 1) { /* using one because of the bits left byte */
+ s = OPENSSL_malloc((int)len);
+ if (s == NULL) {
+ i = ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+ memcpy(s, p, (int)len);
+ s[len - 1] &= (0xff << i);
+ p += len;
+ } else
+ s = NULL;
+
+ ret->length = (int)len;
+ OPENSSL_free(ret->data);
+ ret->data = s;
+ ret->type = V_ASN1_BIT_STRING;
+ if (a != NULL)
+ (*a) = ret;
+ *pp = p;
+ return (ret);
+ err:
+ ASN1err(ASN1_F_C2I_ASN1_BIT_STRING, i);
+ if ((a == NULL) || (*a != ret))
+ ASN1_BIT_STRING_free(ret);
+ return (NULL);
+}
+
+/*
+ * These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>