- {
- BIO_ASN1_BUF_CTX *ctx;
- ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
- if (ctx == NULL)
- return 0;
- if (ctx->buf)
- OPENSSL_free(ctx->buf);
- OPENSSL_free(ctx);
- b->init = 0;
- b->ptr = NULL;
- b->flags = 0;
- return 1;
- }
-
-static int asn1_bio_write(BIO *b, const char *in , int inl)
- {
- BIO_ASN1_BUF_CTX *ctx;
- int wrmax, wrlen, ret;
- unsigned char *p;
- if (!in || (inl < 0) || (b->next_bio == NULL))
- return 0;
- ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
- if (ctx == NULL)
- return 0;
-
- wrlen = 0;
- ret = -1;
-
- for(;;)
- {
- switch (ctx->state)
- {
-
- /* Setup prefix data, call it */
- case ASN1_STATE_START:
- if (!asn1_bio_setup_ex(b, ctx, ctx->prefix,
- ASN1_STATE_PRE_COPY, ASN1_STATE_HEADER))
- return 0;
- break;
-
- /* Copy any pre data first */
- case ASN1_STATE_PRE_COPY:
-
- ret = asn1_bio_flush_ex(b, ctx, ctx->prefix_free,
- ASN1_STATE_HEADER);
-
- if (ret <= 0)
- goto done;
-
- break;
-
- case ASN1_STATE_HEADER:
- ctx->buflen =
- ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
- OPENSSL_assert(ctx->buflen <= ctx->bufsize);
- p = ctx->buf;
- ASN1_put_object(&p, 0, inl,
- ctx->asn1_tag, ctx->asn1_class);
- ctx->copylen = inl;
- ctx->state = ASN1_STATE_HEADER_COPY;
-
- break;
-
- case ASN1_STATE_HEADER_COPY:
- ret = BIO_write(b->next_bio,
- ctx->buf + ctx->bufpos, ctx->buflen);
- if (ret <= 0)
- goto done;
-
- ctx->buflen -= ret;
- if (ctx->buflen)
- ctx->bufpos += ret;
- else
- {
- ctx->bufpos = 0;
- ctx->state = ASN1_STATE_DATA_COPY;
- }
-
- break;
-
- case ASN1_STATE_DATA_COPY:
-
- if (inl > ctx->copylen)
- wrmax = ctx->copylen;
- else
- wrmax = inl;
- ret = BIO_write(b->next_bio, in, wrmax);
- if (ret <= 0)
- break;
- wrlen += ret;
- ctx->copylen -= ret;
- in += ret;
- inl -= ret;
-
- if (ctx->copylen == 0)
- ctx->state = ASN1_STATE_HEADER;
-
- if (inl == 0)
- goto done;
-
- break;
-
- default:
- BIO_clear_retry_flags(b);
- return 0;
-
- }
-
- }
-
- done:
- BIO_clear_retry_flags(b);
- BIO_copy_next_retry(b);
-
- return (wrlen > 0) ? wrlen : ret;
-
- }
+{
+ BIO_ASN1_BUF_CTX *ctx = (BIO_ASN1_BUF_CTX *)b->ptr;
+
+ if (ctx == NULL)
+ return 0;
+ OPENSSL_free(ctx->buf);
+ OPENSSL_free(ctx);
+ b->init = 0;
+ b->ptr = NULL;
+ b->flags = 0;
+ return 1;
+}
+
+static int asn1_bio_write(BIO *b, const char *in, int inl)
+{
+ BIO_ASN1_BUF_CTX *ctx;
+ int wrmax, wrlen, ret;
+ unsigned char *p;
+ if (!in || (inl < 0) || (b->next_bio == NULL))
+ return 0;
+ ctx = (BIO_ASN1_BUF_CTX *)b->ptr;
+ if (ctx == NULL)
+ return 0;
+
+ wrlen = 0;
+ ret = -1;
+
+ for (;;) {
+ switch (ctx->state) {
+
+ /* Setup prefix data, call it */
+ case ASN1_STATE_START:
+ if (!asn1_bio_setup_ex(b, ctx, ctx->prefix,
+ ASN1_STATE_PRE_COPY, ASN1_STATE_HEADER))
+ return 0;
+ break;
+
+ /* Copy any pre data first */
+ case ASN1_STATE_PRE_COPY:
+
+ ret = asn1_bio_flush_ex(b, ctx, ctx->prefix_free,
+ ASN1_STATE_HEADER);
+
+ if (ret <= 0)
+ goto done;
+
+ break;
+
+ case ASN1_STATE_HEADER:
+ ctx->buflen = ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
+ OPENSSL_assert(ctx->buflen <= ctx->bufsize);
+ p = ctx->buf;
+ ASN1_put_object(&p, 0, inl, ctx->asn1_tag, ctx->asn1_class);
+ ctx->copylen = inl;
+ ctx->state = ASN1_STATE_HEADER_COPY;
+
+ break;
+
+ case ASN1_STATE_HEADER_COPY:
+ ret = BIO_write(b->next_bio, ctx->buf + ctx->bufpos, ctx->buflen);
+ if (ret <= 0)
+ goto done;
+
+ ctx->buflen -= ret;
+ if (ctx->buflen)
+ ctx->bufpos += ret;
+ else {
+ ctx->bufpos = 0;
+ ctx->state = ASN1_STATE_DATA_COPY;
+ }
+
+ break;
+
+ case ASN1_STATE_DATA_COPY:
+
+ if (inl > ctx->copylen)
+ wrmax = ctx->copylen;
+ else
+ wrmax = inl;
+ ret = BIO_write(b->next_bio, in, wrmax);
+ if (ret <= 0)
+ break;
+ wrlen += ret;
+ ctx->copylen -= ret;
+ in += ret;
+ inl -= ret;
+
+ if (ctx->copylen == 0)
+ ctx->state = ASN1_STATE_HEADER;
+
+ if (inl == 0)
+ goto done;
+
+ break;
+
+ default:
+ BIO_clear_retry_flags(b);
+ return 0;
+
+ }
+
+ }
+
+ done:
+ BIO_clear_retry_flags(b);
+ BIO_copy_next_retry(b);
+
+ return (wrlen > 0) ? wrlen : ret;
+
+}